技术领域Technical Field
本发明涉及药品注射技术领域，尤其涉及一种双向剂量设定单元及流体输送装置。The present invention relates to the technical field of drug injection, and in particular to a bidirectional dosage setting unit and a fluid delivery device.
背景技术Background Art
注射装置是一种常用的医疗器械，用于给人体注射药物或液体，其广泛用于医疗行业。但是从目前公开可知的技术实现中，可以发现注射装置有一次性使用的，药剂和器械不可分离的注射装置，这种装置的特点是一次性使用，使用不方便，产品利用率低，价值小。也可以看到，注射装置有药剂和器械不可分离的注射装置，但是这种装置是可设定剂量的，在药剂使用完成后，器械不可重复利用使用。也可以看到，注射装置有药剂和器械是可以分离的，药剂一般被设置为卡式瓶形式，器械可设定剂量，也可重复使用，但是这种装置的剂量设定是不可逆的，当用户设定剂量错误需要重新设定时是无法取消的，这会导致操作使用的不便捷性和注射剂量的风险。也有的装置会有剂量过设定的情况，使操作及剂量注射过程存在很多不可控的风险。The injection device is a commonly used medical device used to inject drugs or liquids into the human body, and is widely used in the medical industry. However, from the currently publicly known technical implementations, it can be found that the injection device has a disposable injection device in which the medicine and the device are inseparable. The characteristics of this device are disposable, inconvenient to use, low product utilization rate, and low value. It can also be seen that the injection device has an injection device in which the medicine and the device are inseparable, but this device can set the dose, and after the medicine is used, the device cannot be reused. It can also be seen that the injection device has a medicine and the device that can be separated. The medicine is generally set in the form of a cartridge bottle. The device can set the dose and can be reused, but the dose setting of this device is irreversible. When the user sets the dose incorrectly and needs to reset it, it cannot be cancelled, which will lead to the inconvenience of operation and use and the risk of injection dose. Some devices may have over-set doses, which makes the operation and dose injection process have many uncontrollable risks.
中国发明专利CN105477744A公开了一种固定剂量的一次性注射笔，包括外置按钮、调节杆、轴套、外壳、丝杆、笔芯支架和下壳，所述外置按钮安装在调节杆上端，丝杆通过轴套安装在调节杆上，丝杆的外壁设有卡槽，且卡槽内设有荆齿结构，轴套的下端设有荆爪机构，调节杆外套装有外壳，外壳内部设有导向槽，外壳内部下端设有与轴套的荆爪机构形成旋转调节反馈机构的单向荆齿面，外壳底部设有与丝杆上的荆齿结构形成倒爪式结构的荆爪结构，调节杆上设有与导向槽相配合的导向块。该发明不能实现双向剂量控制设定，即当剂量设定错误时，不能矫正错误的剂量设定。Chinese invention patent CN105477744A discloses a fixed-dose disposable injection pen, including an external button, an adjustment rod, a sleeve, a housing, a screw, a refill holder and a lower housing, wherein the external button is mounted on the upper end of the adjustment rod, the screw is mounted on the adjustment rod through the sleeve, a slot is provided on the outer wall of the screw, and a tooth structure is provided in the slot, a claw mechanism is provided at the lower end of the sleeve, the adjustment rod is covered with a housing, a guide groove is provided inside the housing, a unidirectional tooth surface is provided at the lower end of the housing to form a rotation adjustment feedback mechanism with the claw mechanism of the sleeve, a claw structure is provided at the bottom of the housing to form an inverted claw structure with the tooth structure on the screw, and a guide block is provided on the adjustment rod to match the guide groove. This invention cannot realize bidirectional dose control setting, that is, when the dose setting is wrong, the wrong dose setting cannot be corrected.
发明内容Summary of the invention
针对上述现有技术中存在的问题，本发明提供了一种双向剂量设定单元及流体输送装置，本发明要解决的技术问题是如何实现药品注射中对于错误的剂量设定的修正。In view of the problems existing in the above-mentioned prior art, the present invention provides a bidirectional dose setting unit and a fluid delivery device. The technical problem to be solved by the present invention is how to correct the wrong dose setting during drug injection.
为解决上述技术问题，本发明提供了一种双向剂量设定单元，包括壳体、剂量设定旋钮、标度设定单元和蓄力单元；In order to solve the above technical problems, the present invention provides a bidirectional dose setting unit, comprising a housing, a dose setting knob, a scale setting unit and a power storage unit;
壳体套设在标度设定单元的外部，壳体的内壁与标度设定单元的外壁螺纹连接，标度设定单元的一端从壳体穿出；蓄力单元套设在标度设定单元的外部；The shell is sleeved on the outside of the scale setting unit, the inner wall of the shell is threadedly connected to the outer wall of the scale setting unit, and one end of the scale setting unit passes through the shell; the power storage unit is sleeved on the outside of the scale setting unit;
剂量设定旋钮为中空结构，剂量设定旋钮套设在壳体的外部，二者之间通过弹性结构进行连接；通过挤压弹性结构，能够实现剂量设定旋钮的正向和反向旋转；弹性结构恢复形变时，弹性结构能够限制剂量设定旋钮和壳体发生相对旋转；The dose setting knob is a hollow structure, and the dose setting knob is sleeved on the outside of the shell, and the two are connected by an elastic structure; by squeezing the elastic structure, the forward and reverse rotation of the dose setting knob can be achieved; when the elastic structure recovers its deformation, the elastic structure can limit the relative rotation between the dose setting knob and the shell;
剂量设定旋钮的内壁还与标度设定单元上穿出壳体的一端连接，限制二者发生相对旋转；The inner wall of the dose setting knob is also connected to one end of the scale setting unit that passes through the housing to restrict the relative rotation between the two.
旋转剂量设定旋钮，能够带动标度设定单元旋转，标度设定单元相对外壳产生轴向位移，从而实现剂量的正向设定和反向修正；标度设定单元正向旋转的同时，对蓄力单元进行蓄力。Rotating the dose setting knob can drive the scale setting unit to rotate, and the scale setting unit produces axial displacement relative to the housing, thereby realizing positive setting and reverse correction of the dose; while the scale setting unit rotates forward, the power storage unit is charged.
进一步的，所述弹性结构为啮合齿型结构。Furthermore, the elastic structure is a meshing tooth structure.
进一步的，所述弹性结构包括弹性部件，弹性部件设置在剂量设定旋钮的内壁或者设置在壳体的外壁。Further, the elastic structure includes an elastic component, and the elastic component is arranged on the inner wall of the dose setting knob or on the outer wall of the housing.
进一步的，剂量设定旋钮的内部沿周向设置有多个安装槽，用于容纳弹性部件；所述安装槽的侧面设置有开口，所述开口设置在安装槽靠近剂量设定旋钮内部的侧壁上。Furthermore, a plurality of mounting grooves are circumferentially arranged inside the dose setting knob for accommodating the elastic component; and openings are arranged on the sides of the mounting grooves, and the openings are arranged on the side walls of the mounting grooves close to the inside of the dose setting knob.
进一步的，弹性部件的两端设置在安装槽中，弹性部件的中部从所述开口中顶出。Furthermore, both ends of the elastic component are arranged in the mounting grooves, and the middle part of the elastic component is pushed out from the opening.
进一步的，弹性部件为弹性拨片。Furthermore, the elastic component is an elastic pick.
进一步的，壳体的外壁上设置有刚性啮合齿，所述刚性啮合齿与弹性部件相啮合。Furthermore, rigid meshing teeth are provided on the outer wall of the shell, and the rigid meshing teeth mesh with the elastic component.
进一步的，剂量设定旋钮内部设置有连接部，所述连接部内部设置有通孔，所述通孔侧壁上设置有啮合齿槽，剂量设定旋钮通过啮合齿槽与标度设定单元的外壁卡接，限制二者之间发生相对转动。Furthermore, a connecting portion is provided inside the dose setting knob, a through hole is provided inside the connecting portion, and an engaging tooth groove is provided on the side wall of the through hole. The dose setting knob is engaged with the outer wall of the scale setting unit through the engaging tooth groove to limit relative rotation between the two.
进一步的，标度设定单元包括离合器、驱动轴和标度尺，驱动轴套设在离合器的外部，二者之间卡接连接；标度尺套设在驱动轴的外部，二者之间卡接连接；标度尺的外壁设置有外螺纹，与壳体的内壁螺纹连接。Furthermore, the scale setting unit includes a clutch, a drive shaft and a scale, the drive shaft is sleeved on the outside of the clutch, and the two are snap-connected; the scale is sleeved on the outside of the drive shaft, and the two are snap-connected; the outer wall of the scale is provided with an external thread, which is threadedly connected to the inner wall of the shell.
进一步的，蓄力单元包括卷簧和卷簧套，卷簧的外圈与卷簧套的内壁固定连接，卷簧的内圈与离合器的外壁固定连接，卷簧套的外壁与壳体卡合连接，限制二者发生相对旋转；当旋转剂量设定旋钮时，带动离合器进行旋转，卷簧进行蓄力。Furthermore, the force storage unit includes a coil spring and a coil spring sleeve, the outer ring of the coil spring is fixedly connected to the inner wall of the coil spring sleeve, the inner ring of the coil spring is fixedly connected to the outer wall of the clutch, and the outer wall of the coil spring sleeve is engaged with the shell to limit the relative rotation between the two; when the dose setting knob is rotated, the clutch is driven to rotate and the coil spring is used to store force.
进一步的，所述壳体上部的外壁上设置有一圈周向凹槽，所述剂量设定旋钮的内壁沿周向设置有突刺，周向凹槽与突刺向配合，限制了剂量设定旋钮的轴向位移，剂量设定旋钮能够围绕轴线旋转。Furthermore, a circle of circumferential grooves is provided on the outer wall of the upper part of the shell, and the inner wall of the dose setting knob is circumferentially provided with spurs, and the circumferential grooves cooperate with the spurs to limit the axial displacement of the dose setting knob, and the dose setting knob can rotate around the axis.
本发明提供了一种流体输送装置，包括上述双向剂量设定单元、复位单元、螺杆离合器和螺杆；The present invention provides a fluid delivery device, comprising the above-mentioned bidirectional dosage setting unit, a reset unit, a screw clutch and a screw;
标度设定单元从剂量设定旋钮中穿出后，与复位单元连接；螺杆离合器设置在壳体内部，螺杆离合器设置在标度设定单元的下方；螺杆从螺杆离合器中穿出后，与标度设定单元的内部螺纹连接；The scale setting unit is connected to the reset unit after passing through the dose setting knob; the screw clutch is arranged inside the housing, and the screw clutch is arranged below the scale setting unit; the screw is connected to the internal thread of the scale setting unit after passing through the screw clutch;
旋转剂量设定旋钮，带动标度设定单元旋转，对蓄力单元进行蓄力；对复位单元进行施压，标度设定单元中的离合器沿轴向向下移动，与螺杆离合器实现连接，与此同时，解除了旋转剂量设定对离合器绕轴向旋转的限制，蓄力单元的蓄力被释放，带动离合器旋转，螺杆离合器随之发生旋转，对螺杆产生轴向推进作用；当蓄力被释放完毕，取消对复位单元的施压，复位单元带动离合器向上沿轴向移动，实现标度设定单元的复位。Rotating the dose setting knob drives the scale setting unit to rotate, thereby storing force in the force storage unit; applying pressure to the reset unit causes the clutch in the scale setting unit to move axially downward and connect with the screw clutch. At the same time, the restriction on the axial rotation of the clutch by the rotary dose setting is released, and the force of the force storage unit is released, driving the clutch to rotate, and the screw clutch rotates accordingly, producing an axial propulsion effect on the screw; when the force is released, the pressure on the reset unit is cancelled, and the reset unit drives the clutch to move axially upward to reset the scale setting unit.
进一步的，旋转剂量设定旋钮的内部设置有旋钮盖，旋钮盖为中空结构，旋钮盖设置在旋转剂量设定旋钮的连接部的上方；复位单元设置在旋钮盖的开口处，复位单元包括注射按键、离合器盖和保持压簧，保持压簧套设在离合器的外部，保持压簧上方套设有离合器盖，离合器盖内部设置有通孔，离合器的一端从所述通孔中穿出，离合器盖的上表面与离合器的一端相抵，避免离合器盖从离合器上脱离；离合器盖的外部盖设有注射按键；注射按键与旋钮盖滑动连接；注射按键的外缘与旋钮盖的开口边缘相抵，限制注射按键向远离离合器的方向移动。Furthermore, a knob cover is provided inside the rotary dose setting knob, and the knob cover is a hollow structure, and the knob cover is provided above the connecting portion of the rotary dose setting knob; a reset unit is provided at the opening of the knob cover, and the reset unit includes an injection button, a clutch cover and a retaining compression spring, and the retaining compression spring is sleeved on the outside of the clutch, and a clutch cover is sleeved above the retaining compression spring, and a through hole is provided inside the clutch cover, and one end of the clutch passes through the through hole, and the upper surface of the clutch cover abuts against one end of the clutch to prevent the clutch cover from detaching from the clutch; an injection button is provided on the outer cover of the clutch cover; the injection button is slidably connected to the knob cover; the outer edge of the injection button abuts against the opening edge of the knob cover to limit the movement of the injection button away from the clutch.
本发明一种具有双向剂量控制的流体输送装置，剂量设定旋钮与壳体之间通过弹性结构进行连接；通过挤压弹性结构，能够实现剂量设定旋钮的正向和反向旋转；弹性结构恢复形变时，弹性结构能够限制剂量设定旋钮和壳体发生相对旋转；壳体的内壁与标度设定单元的外壁螺纹连接，剂量设定旋钮的内壁还与标度设定单元上穿出壳体的一端连接，标度设定单元包括离合器、驱动轴和标度尺，驱动轴套设在离合器的外部，二者之间卡接连接；标度尺套设在驱动轴的外部，二者之间卡接连接，旋转剂量设定旋钮，能够带动标度设定单元旋转，标度尺相对外壳产生轴向位移，从而实现剂量的正向设定和反向修正。The present invention provides a fluid delivery device with bidirectional dose control, wherein a dose setting knob is connected to a shell through an elastic structure; the dose setting knob can be rotated in the forward and reverse directions by squeezing the elastic structure; when the elastic structure recovers its deformation, the elastic structure can limit the dose setting knob and the shell from rotating relative to each other; the inner wall of the shell is threadedly connected to the outer wall of a scale setting unit, and the inner wall of the dose setting knob is also connected to an end of the scale setting unit that passes through the shell; the scale setting unit comprises a clutch, a drive shaft and a scale, the drive shaft is sleeved on the outside of the clutch, and the two are connected by a clamping connection; the scale is sleeved on the outside of the drive shaft, and the two are connected by a clamping connection; rotating the dose setting knob can drive the scale setting unit to rotate, and the scale produces an axial displacement relative to the shell, thereby realizing forward setting and reverse correction of the dose.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1是本发明一种具有双向剂量控制的流体输送装置的结构示意图；FIG1 is a schematic structural diagram of a fluid delivery device with bidirectional dosage control according to the present invention;
图2是本发明一种具有双向剂量控制的流体输送装置的初始状态的横向剖视图；2 is a transverse cross-sectional view of an initial state of a fluid delivery device with bidirectional dosage control according to the present invention;
图3是本发明一种具有双向剂量控制的流体输送装置的按下注射按键后的横向剖视图；FIG3 is a transverse cross-sectional view of a fluid delivery device with bidirectional dosage control according to the present invention after an injection button is pressed;
图4是根据本发明的一个优选实施例的剂量设定过程中弹簧拨片的状态示意图，其中图4(a)是在剂量设定过程中弹簧拨片与外壳上的齿槽相啮合的状态示意图，图4(b)是在旋转剂量设定旋钮过程中，弹簧拨片在旋转过程中，被外壳齿槽挤压下弹性变形的状态示意图；FIG4 is a schematic diagram of the state of a spring paddle during a dose setting process according to a preferred embodiment of the present invention, wherein FIG4(a) is a schematic diagram of the state in which the spring paddle is engaged with a tooth groove on a housing during the dose setting process, and FIG4(b) is a schematic diagram of the state in which the spring paddle is elastically deformed by being squeezed by the tooth groove of the housing during the rotation of the dose setting knob;
图5是本发明的一个优选实施例的剂量设定旋钮、装配弹簧拨片和旋钮盖的结构示意图，其中图5(a)是剂量设定旋钮纵向剖视图，图5(b)是装配了弹簧拨片和旋钮盖后剂量设定旋钮的剖视图；FIG5 is a schematic structural diagram of a dose setting knob, a spring paddle and a knob cover according to a preferred embodiment of the present invention, wherein FIG5(a) is a longitudinal cross-sectional view of the dose setting knob, and FIG5(b) is a cross-sectional view of the dose setting knob after the spring paddle and the knob cover are assembled;
图6是本发明一种双向剂量设定单元及流体输送装置的弹簧拨片的结构示意图；6 is a schematic structural diagram of a bidirectional dose setting unit and a spring paddle of a fluid delivery device according to the present invention;
图7是本发明一种双向剂量设定单元及流体输送装置的离合器结构示意图；7 is a schematic diagram of a clutch structure of a bidirectional dosage setting unit and a fluid delivery device of the present invention;
图8是本发明一种双向剂量设定单元及流体输送装置的限位环结构示意图；FIG8 is a schematic diagram of a structure of a limiting ring of a bidirectional dosage setting unit and a fluid delivery device according to the present invention;
图9是本发明一种双向剂量设定单元及流体输送装置的螺杆离合器轴向剖视图；9 is an axial cross-sectional view of a screw clutch of a bidirectional dosage setting unit and a fluid delivery device of the present invention;
图10(a)是本发明一种双向剂量设定单元及流体输送装置的外壳的结构示意图；图10(b)是本发明一种双向剂量设定单元及流体输送装置的外壳的轴向剖视图；FIG10( a ) is a schematic structural diagram of a housing of a bidirectional dose setting unit and a fluid delivery device according to the present invention; FIG10( b ) is an axial cross-sectional view of a housing of a bidirectional dose setting unit and a fluid delivery device according to the present invention;
图11是本发明一种双向剂量设定单元及流体输送装置的内壳轴向剖视图；11 is an axial cross-sectional view of an inner shell of a bidirectional dose setting unit and a fluid delivery device of the present invention;
图12是本发明一种双向剂量设定单元及流体输送装置的标度尺结构示意图；12 is a schematic diagram of a scale structure of a bidirectional dose setting unit and a fluid delivery device of the present invention;
图13(a)是本发明一种双向剂量设定单元及流体输送装置的驱动轴结构示意图，13(b)本发明一种双向剂量设定单元及流体输送装置的驱动轴轴向剖视图；FIG13(a) is a schematic diagram of the structure of a driving shaft of a bidirectional dose setting unit and a fluid delivery device according to the present invention, and FIG13(b) is an axial cross-sectional view of the driving shaft of a bidirectional dose setting unit and a fluid delivery device according to the present invention;
14(a)是螺杆的局部放大图；图14(b)是本发明一种双向剂量设定单元及流体输送装置的螺杆的俯视图；14(a) is a partial enlarged view of the screw; FIG. 14(b) is a top view of the screw of a bidirectional dose setting unit and a fluid delivery device of the present invention;
图15是本发明一种双向剂量设定单元及流体输送装置的卷簧套的结构示意图；15 is a schematic structural diagram of a bidirectional dose setting unit and a coil spring sleeve of a fluid delivery device according to the present invention;
图16是本发明一种具有双向剂量控制的流体输送装置的爆炸图。FIG. 16 is an exploded view of a fluid delivery device with bidirectional dosage control according to the present invention.
参考附图标记：1注射按钮、2剂量设定旋钮、3保持压簧、4离合器盖、5旋钮盖、6弹簧拨片、7卷簧、8卷簧套、9润滑片、10外壳、11内壳、12标度尺、13驱动轴、14螺杆、15螺杆离合器、16限位环、17笔芯支架、18卡式瓶、19笔帽、20离合器。Reference figures: 1 injection button, 2 dose setting knob, 3 retaining spring, 4 clutch cover, 5 knob cover, 6 spring paddle, 7 coil spring, 8 coil spring sleeve, 9 lubricating sheet, 10 outer shell, 11 inner shell, 12 scale, 13 drive shaft, 14 screw, 15 screw clutch, 16 limiting ring, 17 refill holder, 18 cartridge bottle, 19 pen cap, 20 clutch.
具体实施方式DETAILED DESCRIPTION
为使本发明实施方式的目的、技术方案和优点更加清楚，下面将结合本发明实施方式中的附图，对本发明实施方式中的技术方案进行清楚、完整地描述，显然，所描述的实施方式是本发明一部分实施方式，而不是全部的实施方式。基于本发明中的实施方式，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施方式，都属于本发明保护的范围。In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
因此，以下对在附图中提供的本发明的实施方式的详细描述并非旨在限制要求保护的本发明的范围，而是仅仅表示本发明的选定实施方式。基于本发明中的实施方式，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施方式，都属于本发明保护的范围。Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步定义和解释。It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition and explanation in the subsequent drawings.
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
为了更好地了解本发明的目的、结构及功能，下面结合附图，对本发明一种双向剂量设定单元及流体输送装置进一步详细描述。In order to better understand the purpose, structure and function of the present invention, a bidirectional dosage setting unit and a fluid delivery device of the present invention are further described in detail below with reference to the accompanying drawings.
实施例1：Embodiment 1:
如图1所示，本发明一种双向剂量设定单元，包括壳体21、剂量设定旋钮2、标度设定单元和蓄力单元；As shown in FIG1 , a bidirectional dose setting unit of the present invention includes a housing 21 , a dose setting knob 2 , a scale setting unit and a power storage unit;
壳体21套设在标度设定单元的外部，壳体21的内壁与标度设定单元的外壁螺纹连接，标度设定单元的一端从壳体21穿出；蓄力单元套设在标度设定单元的外部；The housing 21 is sleeved on the outside of the scale setting unit, the inner wall of the housing 21 is threadedly connected to the outer wall of the scale setting unit, and one end of the scale setting unit passes through the housing 21; the power storage unit is sleeved on the outside of the scale setting unit;
剂量设定旋钮2为中空结构，剂量设定旋钮套设在壳体的外部，二者之间通过弹性结构进行连接；通过挤压弹性结构，能够实现剂量设定旋钮的正向和反向旋转；弹性结构恢复形变时，弹性结构能够限制剂量设定旋钮和壳体发生相对旋转；The dose setting knob 2 is a hollow structure, and the dose setting knob is sleeved on the outside of the housing, and the two are connected by an elastic structure; by squeezing the elastic structure, the forward and reverse rotation of the dose setting knob can be achieved; when the elastic structure recovers its deformation, the elastic structure can limit the relative rotation between the dose setting knob and the housing;
剂量设定旋钮2的内壁还与标度设定单元上穿出壳体的一端连接，限制二者发生相对旋转；The inner wall of the dose setting knob 2 is also connected to one end of the scale setting unit that passes through the housing to limit the relative rotation between the two.
旋转剂量设定旋钮2，能够带动标度设定单元旋转，标度设定单元相对外壳产生轴向位移，从而实现剂量的正向设定和反向修正；标度设定单元正向旋转的同时，对蓄力单元进行蓄力。Rotating the dose setting knob 2 can drive the scale setting unit to rotate, and the scale setting unit generates axial displacement relative to the housing, thereby realizing positive setting and reverse correction of the dose; while the scale setting unit rotates forward, the power storage unit is charged.
实施例2：Embodiment 2:
如图1所示，本发明一种双向剂量设定单元，包括壳体21、剂量设定旋钮2、标度设定单元和蓄力单元；As shown in FIG1 , a bidirectional dose setting unit of the present invention includes a housing 21 , a dose setting knob 2 , a scale setting unit and a power storage unit;
壳体21套设在标度设定单元的外部，壳体21的内壁与标度设定单元的外壁螺纹连接，标度设定单元的一端从壳体21穿出；蓄力单元套设在标度设定单元的外部；The housing 21 is sleeved on the outside of the scale setting unit, the inner wall of the housing 21 is threadedly connected to the outer wall of the scale setting unit, and one end of the scale setting unit passes through the housing 21; the power storage unit is sleeved on the outside of the scale setting unit;
如图4所示，剂量设定旋钮2为中空结构，剂量设定旋钮套设在壳体的外部，二者之间通过弹性结构进行连接；通过挤压弹性结构，能够实现剂量设定旋钮的正向和反向旋转；弹性结构恢复形变时，弹性结构能够限制剂量设定旋钮和壳体发生相对旋转；As shown in FIG. 4 , the dose setting knob 2 is a hollow structure, and the dose setting knob is sleeved on the outside of the housing, and the two are connected by an elastic structure; by squeezing the elastic structure, the forward and reverse rotation of the dose setting knob can be achieved; when the elastic structure recovers its deformation, the elastic structure can limit the relative rotation between the dose setting knob and the housing;
剂量设定旋钮2的内壁还与标度设定单元上穿出壳体的一端连接，限制二者发生相对旋转；The inner wall of the dose setting knob 2 is also connected to one end of the scale setting unit that passes through the housing to limit the relative rotation between the two.
旋转剂量设定旋钮2，能够带动标度设定单元旋转，标度设定单元相对外壳产生轴向位移，从而实现剂量的正向设定和反向修正；标度设定单元正向旋转的同时，对蓄力单元进行蓄力。Rotating the dose setting knob 2 can drive the scale setting unit to rotate, and the scale setting unit generates axial displacement relative to the housing, thereby realizing positive setting and reverse correction of the dose; while the scale setting unit rotates forward, the power storage unit is charged.
本实施例与第一实施例不同之处在于：The difference between this embodiment and the first embodiment is that:
所述弹性结构为啮合齿型结构，包括弹性部件，弹性部件设置在剂量设定旋钮2上，或者设置在壳体21的外壁上；当弹性部件设置在剂量设定旋钮2上时，壳体21的外壁上对应设置有刚性啮合齿；当弹性部件设置在壳体21的外壁上时，剂量设定旋钮2的内部对应设置有刚性啮合齿；The elastic structure is a meshing tooth structure, including an elastic component, which is arranged on the dose setting knob 2 or on the outer wall of the housing 21; when the elastic component is arranged on the dose setting knob 2, the outer wall of the housing 21 is correspondingly provided with rigid meshing teeth; when the elastic component is arranged on the outer wall of the housing 21, the inside of the dose setting knob 2 is correspondingly provided with rigid meshing teeth;
优选地，弹性部件设置在剂量设定旋钮2上壳体21的外壁上对应设置有刚性啮合齿；Preferably, the elastic component is arranged on the outer wall of the housing 21 of the dose setting knob 2 and a rigid meshing tooth is correspondingly arranged;
如图5所示，剂量设定旋钮2的内部沿周向设置有多个安装槽2-2，用于容纳弹性部件，所述安装槽2-2的侧面设置有开口，所述开口设置在安装槽2-2靠近剂量设定旋钮2内部的侧壁上；如图6所示，弹性部件为弹性拨片6，弹性拨片6的两端设置在安装槽2-2中，弹性拨片6的中部朝向剂量设定旋钮2的内部从所述开口中顶出；As shown in FIG5 , a plurality of mounting grooves 2-2 are circumferentially arranged inside the dose setting knob 2 for accommodating elastic components, and an opening is arranged on the side of the mounting groove 2-2, and the opening is arranged on the side wall of the mounting groove 2-2 close to the inside of the dose setting knob 2; as shown in FIG6 , the elastic component is an elastic paddle 6, and both ends of the elastic paddle 6 are arranged in the mounting groove 2-2, and the middle part of the elastic paddle 6 is pushed out from the opening toward the inside of the dose setting knob 2;
如图10所示，设置在剂量设定旋钮2内的弹簧拨片6与外壳10外壁的第七啮合齿10-1啮合，且外壳10外部的第七啮合齿10-1的刻度和标度设定单元中的标度尺12具有相同的刻度；As shown in FIG. 10 , the spring paddle 6 disposed in the dose setting knob 2 is engaged with the seventh meshing tooth 10 - 1 on the outer wall of the housing 10 , and the scale of the seventh meshing tooth 10 - 1 on the outside of the housing 10 and the scale 12 in the scale setting unit have the same scale;
剂量设定旋钮2内部设置有连接部，所述连接部内部设置有通孔，所述通孔侧壁上设置有啮合齿槽2-1，剂量设定旋钮2利用啮合齿槽2-1与标度设定单元的外壁卡接，限制二者之间发生相对转动。A connecting portion is provided inside the dose setting knob 2, a through hole is provided inside the connecting portion, and an engaging tooth groove 2-1 is provided on the side wall of the through hole. The dose setting knob 2 is engaged with the outer wall of the scale setting unit by the engaging tooth groove 2-1 to limit relative rotation between the two.
标度设定单元包括离合器20、驱动轴13和标度尺12，驱动轴13套设在离合器20的外部，二者之间卡接，限制二者发生相对旋转；标度尺12套设在驱动轴13的外部，二者之间卡接，限制二者发生相对旋转；The scale setting unit includes a clutch 20, a drive shaft 13 and a scale 12. The drive shaft 13 is sleeved on the outside of the clutch 20, and the two are engaged to limit the relative rotation between the two. The scale 12 is sleeved on the outside of the drive shaft 13, and the two are engaged to limit the relative rotation between the two.
如图7所示，离合器20的上部设置有弹性卡扣20-1；As shown in FIG7 , an elastic buckle 20 - 1 is provided on the upper portion of the clutch 20 ;
弹性卡扣20-1的外壁设置有第一啮合齿20-2，第一啮合齿20-2与剂量设定旋钮2的连接部的啮合齿槽2-1卡合连接；The outer wall of the elastic buckle 20 - 1 is provided with a first meshing tooth 20 - 2 , and the first meshing tooth 20 - 2 is engaged with the meshing tooth groove 2 - 1 of the connecting portion of the dose setting knob 2 ;
如图13所示，弹性卡扣20-1的第一啮合齿20-2的下方设置有第二啮合齿20-4，第二啮合齿20-4与驱动轴13上的第三啮合齿13-2卡合连接；As shown in FIG. 13 , a second meshing tooth 20 - 4 is disposed below the first meshing tooth 20 - 2 of the elastic buckle 20 - 1 , and the second meshing tooth 20 - 4 is engaged with the third meshing tooth 13 - 2 on the driving shaft 13 ;
如图12所示，驱动轴13的外壁设置有第四啮合齿13-1，第四啮合齿13-1与标度尺12内壁上的多个凹槽12-1卡合；As shown in FIG. 12 , the outer wall of the driving shaft 13 is provided with fourth meshing teeth 13 - 1 , and the fourth meshing teeth 13 - 1 engage with a plurality of grooves 12 - 1 on the inner wall of the scale 12 ;
标度尺12的外壁设置有螺纹12-2；The outer wall of the scale 12 is provided with a thread 12-2;
壳体21包括外壳10和内壳11，二者固定连接；The housing 21 includes an outer shell 10 and an inner shell 11, which are fixedly connected;
如图11所示，内壳11的内壁上设置有与标度尺12的螺纹相配的内螺纹11-2，内壳11的内壁上设置有限位止挡部件11-3，用于限制标度尺12的轴向移动；内壳11的外壁上设置有凸起11-1，用于与外壳10上的长槽10-4进行卡合固定。As shown in Figure 11, the inner wall of the inner shell 11 is provided with an internal thread 11-2 matching the thread of the scale 12, and the inner wall of the inner shell 11 is provided with a limit stop component 11-3 for limiting the axial movement of the scale 12; the outer wall of the inner shell 11 is provided with a protrusion 11-1 for clamping and fixing with the long groove 10-4 on the outer shell 10.
所述内壳11和所述外壳10上设置有刻度观察窗口10-3，用来观察标度尺12刻度的设定和矫正；The inner shell 11 and the outer shell 10 are provided with scale observation windows 10-3 for observing the setting and correction of the scale 12;
如图10所示，所述外壳10的下部设置有连接螺纹10-5，用于连接流体容纳单元；As shown in FIG10 , the lower portion of the housing 10 is provided with a connecting thread 10 - 5 for connecting the fluid containing unit;
所述外壳10的外壁设置有周向凹槽10-6与所述剂量设定旋钮2的内壁设置的突刺2-3相配合，即剂量设定旋钮2相对外壳10可实现围绕轴线旋转，限制剂量设定旋钮2的轴向位移；The outer wall of the housing 10 is provided with a circumferential groove 10-6 which cooperates with the spurs 2-3 provided on the inner wall of the dose setting knob 2, that is, the dose setting knob 2 can rotate around the axis relative to the housing 10, limiting the axial displacement of the dose setting knob 2;
如图1所示，标度尺12的上方设置有润滑片9，所述润滑片9与外壳10内部的环形台阶面抵接，从而限制标度尺12的轴向位移。As shown in FIG. 1 , a lubricating sheet 9 is disposed above the scale 12 , and the lubricating sheet 9 abuts against an annular step surface inside the housing 10 , thereby limiting the axial displacement of the scale 12 .
实施例3：Embodiment 3:
如图1所示，本发明一种双向剂量设定单元，包括壳体21、剂量设定旋钮2、标度设定单元和蓄力单元；As shown in FIG1 , a bidirectional dose setting unit of the present invention includes a housing 21 , a dose setting knob 2 , a scale setting unit and a power storage unit;
壳体21套设在标度设定单元的外部，壳体21的内壁与标度设定单元的外壁螺纹连接，标度设定单元的一端从壳体21穿出；蓄力单元套设在标度设定单元的外部；The housing 21 is sleeved on the outside of the scale setting unit, the inner wall of the housing 21 is threadedly connected to the outer wall of the scale setting unit, and one end of the scale setting unit passes through the housing 21; the power storage unit is sleeved on the outside of the scale setting unit;
如图4所示，剂量设定旋钮2为中空结构，剂量设定旋钮套设在壳体的外部，二者之间通过弹性结构进行连接；通过挤压弹性结构，能够实现剂量设定旋钮的正向和反向旋转；弹性结构恢复形变时，弹性结构能够限制剂量设定旋钮和壳体发生相对旋转；As shown in FIG. 4 , the dose setting knob 2 is a hollow structure, and the dose setting knob is sleeved on the outside of the housing, and the two are connected by an elastic structure; by squeezing the elastic structure, the forward and reverse rotation of the dose setting knob can be achieved; when the elastic structure recovers its deformation, the elastic structure can limit the relative rotation between the dose setting knob and the housing;
剂量设定旋钮2的内壁还与标度设定单元上穿出壳体的一端连接，限制二者发生相对旋转；The inner wall of the dose setting knob 2 is also connected to one end of the scale setting unit that passes through the housing to limit the relative rotation between the two.
旋转剂量设定旋钮2，能够带动标度设定单元旋转，标度设定单元相对外壳产生轴向位移，从而实现剂量的正向设定和反向修正；标度设定单元正向旋转的同时，对蓄力单元进行蓄力。Rotating the dose setting knob 2 can drive the scale setting unit to rotate, and the scale setting unit generates axial displacement relative to the housing, thereby realizing positive setting and reverse correction of the dose; while the scale setting unit rotates forward, the power storage unit is charged.
本实施例与第二实施例不同之处在于：The difference between this embodiment and the second embodiment is that:
如图1所示，离合器20上套设有蓄力单元，蓄力单元位于第一啮合齿20-2和第二啮合齿20-3之间；As shown in FIG1 , a force storage unit is sleeved on the clutch 20 , and the force storage unit is located between the first meshing tooth 20 - 2 and the second meshing tooth 20 - 3 ;
如图1和图15所示，蓄力单元包括卷簧7和卷簧套8，卷簧套8的内壁上设置有限位槽8-1，卷簧套8的外壁与壳体21卡合连接，限制二者发生相对旋转；As shown in FIG. 1 and FIG. 15 , the power storage unit includes a coil spring 7 and a coil spring sleeve 8. A limiting groove 8-1 is provided on the inner wall of the coil spring sleeve 8. The outer wall of the coil spring sleeve 8 is engaged with the housing 21 to limit the relative rotation between the two.
如图7所示，卷簧7的内圈与离合器20上的卷簧限位结构20-3固定连接，卷簧7的外圈与限位槽8-1固定连接；As shown in FIG. 7 , the inner ring of the coil spring 7 is fixedly connected to the coil spring limiting structure 20 - 3 on the clutch 20 , and the outer ring of the coil spring 7 is fixedly connected to the limiting groove 8 - 1 ;
当旋转剂量设定旋钮2时，带动离合器20进行旋转，卷簧7进行蓄力。When the dose setting knob 2 is rotated, the clutch 20 is driven to rotate, and the coil spring 7 accumulates force.
实施例4：Embodiment 4:
如图1所示，本发明一种流体输送装置，包括上述双向剂量设定单元、复位单元、螺杆离合器15和螺杆14；As shown in FIG1 , a fluid delivery device of the present invention includes the above-mentioned bidirectional dosage setting unit, a reset unit, a screw clutch 15 and a screw 14;
标度设定单元从剂量设定旋钮2中穿出后，与复位单元连接；螺杆离合器15设置在壳体21内部，The scale setting unit passes through the dose setting knob 2 and is connected to the reset unit; the screw clutch 15 is arranged inside the housing 21.
螺杆离合器15设置在标度设定单元的下方；螺杆14从螺杆离合器15中穿出后，与标度设定单元的内部螺纹连接；The screw clutch 15 is arranged below the scale setting unit; after the screw 14 passes through the screw clutch 15, it is connected with the internal thread of the scale setting unit;
旋转剂量设定旋钮2，带动标度设定单元旋转，对蓄力单元进行蓄力；对复位单元进行施压，标度设定单元中的离合器20沿轴向向下移动，与螺杆离合器15实现连接，与此同时，解除了旋转剂量设定2对离合器20绕轴向旋转的限制，蓄力单元的蓄力被释放，带动离合器20旋转，螺杆离合器15随之发生旋转，对螺杆14产生轴向推进作用；当蓄力被释放完毕，取消对复位单元的施压，复位单元带动离合器向上沿轴向移动，实现标度设定单元的复位。Rotate the dose setting knob 2 to drive the scale setting unit to rotate and store force in the force storage unit; apply pressure to the reset unit, and the clutch 20 in the scale setting unit moves axially downward to connect with the screw clutch 15. At the same time, the restriction on the axial rotation of the clutch 20 by rotating the dose setting 2 is released, and the force of the force storage unit is released, driving the clutch 20 to rotate, and the screw clutch 15 rotates accordingly, producing an axial propulsion effect on the screw 14; when the force is released, the pressure on the reset unit is cancelled, and the reset unit drives the clutch to move axially upward to reset the scale setting unit.
本实施例与以上实施例不同之处在于：The difference between this embodiment and the above embodiments is that:
如图1、图5和图16所示，复位单元包括保持压簧3、离合器盖4和注射按键1；旋转剂量设定旋钮2的连接部上方设置有旋钮盖5，旋钮盖5为中空结构，旋钮盖5内部设置有保持压簧3，保持压簧3套设在离合器20的外部，保持压簧3上方盖设有离合器盖4，离合器盖4内部设置有通孔，离合器20上的弹性卡扣20-1从所述通孔中穿出，弹性卡扣20-1的下表面与离合器盖4的上表面抵接；As shown in FIGS. 1 , 5 and 16 , the reset unit comprises a retaining compression spring 3, a clutch cover 4 and an injection button 1; a knob cover 5 is provided above the connection portion of the rotating dose setting knob 2, the knob cover 5 is a hollow structure, a retaining compression spring 3 is provided inside the knob cover 5, the retaining compression spring 3 is sleeved on the outside of the clutch 20, a clutch cover 4 is provided above the retaining compression spring 3, a through hole is provided inside the clutch cover 4, an elastic buckle 20 - 1 on the clutch 20 passes through the through hole, and the lower surface of the elastic buckle 20 - 1 abuts against the upper surface of the clutch cover 4;
如图3所示，离合器盖4的外部盖设有注射按键1，注射按键1的外缘与旋钮盖5的开口处相抵，限制注射按键1向远离装置的方向移动；按压注射按键1，能够将离合器20的第一啮合齿20-2从剂量设定旋钮2的连接部中推出。As shown in FIG3 , the outer cover of the clutch cover 4 is provided with an injection button 1, and the outer edge of the injection button 1 abuts against the opening of the knob cover 5, limiting the movement of the injection button 1 away from the device; pressing the injection button 1 can push the first meshing tooth 20 - 2 of the clutch 20 out of the connecting portion of the dose setting knob 2.
如图1、图9和图14所示，螺杆离合器15套设在螺杆14的外部，螺杆离合器15设置在离合器20的下方，螺杆离合器15的环台15-3与驱动轴13下部的限位台阶13-3抵接，限制了螺杆离合器15沿轴线方向的移动；As shown in FIG. 1 , FIG. 9 and FIG. 14 , the screw clutch 15 is sleeved on the outside of the screw 14 , and the screw clutch 15 is arranged below the clutch 20 , and the ring stage 15 - 3 of the screw clutch 15 abuts against the limiting step 13 - 3 at the lower part of the drive shaft 13 , thereby limiting the movement of the screw clutch 15 along the axial direction;
螺杆离合器15内部设置有内螺纹15-2，用于与螺杆14螺纹连接；The screw clutch 15 is provided with an internal thread 15-2 for threaded connection with the screw 14;
离合器20下行，离合器20的第五啮合齿20-5能够与螺杆离合器15上的第六啮合齿15-1连接；The clutch 20 moves downward, and the fifth meshing tooth 20 - 5 of the clutch 20 can be connected with the sixth meshing tooth 15 - 1 on the screw clutch 15 ;
离合器20内部设置有连接孔，螺杆14从螺杆离合器15中穿出后与所述连接孔螺纹连接；A connection hole is provided inside the clutch 20, and the screw 14 passes through the screw clutch 15 and is threadedly connected to the connection hole;
如图8所示，螺杆离合器15的下方还设置有限位环16，螺杆14依次从限位环16和螺杆离合器15中穿出，然后再与离合器20内部螺纹连接；As shown in FIG8 , a limit ring 16 is further provided below the screw clutch 15 , and the screw 14 passes through the limit ring 16 and the screw clutch 15 in sequence, and then is connected with the inner thread of the clutch 20 ;
限位环16的卡扣16-1和内壳11的卡扣槽11-4相配合，限制限位环16相对外壳10发生旋转和轴向移动，所述限位环16内设置有通孔，通孔的内壁上设置有卡槽凸包16-3，所述螺杆14上设置有卡槽14-1，所述螺杆14的一端贯穿所述限位环16内部，所述限位环16内的卡槽凸包16-3与所述螺杆14上的卡槽14-1相配合，这样螺杆14在螺杆离合器15的旋转中，螺杆14相对装置做轴向移动，推进卡式瓶18内的流体，可更大限度的保证流体输送的稳定性和准确性；The buckle 16-1 of the limiting ring 16 cooperates with the buckle groove 11-4 of the inner shell 11 to limit the rotation and axial movement of the limiting ring 16 relative to the outer shell 10. A through hole is provided in the limiting ring 16, and a groove convex 16-3 is provided on the inner wall of the through hole. A groove 14-1 is provided on the screw 14. One end of the screw 14 passes through the inside of the limiting ring 16. The groove convex 16-3 in the limiting ring 16 cooperates with the groove 14-1 on the screw 14. In this way, when the screw clutch 15 rotates, the screw 14 moves axially relative to the device to push the fluid in the cartridge bottle 18, which can ensure the stability and accuracy of fluid delivery to a greater extent.
限位环16上设置有圆弧过渡凸包16-2，在驱动轴13旋转过程中，通过此结构及部件本身自润滑的特性，减小摩擦阻力，该结构可以增加流体输送的稳定性，通常限位环材料可以被设置为POM\PTFE等带自润滑特性的塑胶材料。The limiting ring 16 is provided with an arc transition convex hump 16-2. During the rotation of the driving shaft 13, the friction resistance is reduced through this structure and the self-lubricating characteristics of the component itself. This structure can increase the stability of fluid transportation. Usually, the limiting ring material can be set to a plastic material with self-lubricating properties such as POM\PTFE.
如图16所示，一种流体输送装置还包括流体容纳单元，所述流体容纳单元包括笔芯支架17、卡式瓶18、笔帽19，所述卡式瓶18容纳在所述笔芯支架17中，所述笔帽19套设在所述笔芯支架17的外部，所述笔芯支架17与所述外壳10下部螺纹。As shown in Figure 16, a fluid delivery device also includes a fluid containing unit, which includes a refill holder 17, a cartridge bottle 18, and a pen cap 19. The cartridge bottle 18 is contained in the refill holder 17, and the pen cap 19 is sleeved on the outside of the refill holder 17. The refill holder 17 is threaded with the lower part of the shell 10.
如图2和图3所示，本发明提供的一种流体输送装置，其工作过程如下：As shown in FIG. 2 and FIG. 3 , a fluid conveying device provided by the present invention has the following working process:
旋转剂量设定旋钮2时，离合器20旋转，卷簧7开始蓄力，卷簧7动力不会释放，同时外壳10外部的第七啮合齿10-1前进一格，剂量设定旋钮2带动离合器20、驱动轴13和标度尺12同步旋转，标度尺也同样前进一格，完成剂量设定步骤，当剂量设定错误的时候，可以向反方向旋转剂量设定旋钮2，矫正剂量设定；When the dose setting knob 2 is rotated, the clutch 20 rotates, the coil spring 7 starts to accumulate power, and the power of the coil spring 7 will not be released. At the same time, the seventh meshing tooth 10-1 on the outside of the housing 10 moves forward one grid, and the dose setting knob 2 drives the clutch 20, the drive shaft 13 and the scale 12 to rotate synchronously, and the scale also moves forward one grid, completing the dose setting step. When the dose setting is wrong, the dose setting knob 2 can be rotated in the opposite direction to correct the dose setting;
在药剂注射步骤中，通过按压注射按钮1，保持压簧3受到挤压，离合器20轴向向下移动，离合器20的第一啮合齿20-2从剂量设定旋钮2的连接部中推出，解除了离合器20绕轴线旋转的限制，离合器20的第五啮合齿20-5与螺杆离合器15上的第六啮合齿15-1实现卡合连接；In the drug injection step, by pressing the injection button 1, the compression spring 3 is kept compressed, the clutch 20 moves axially downward, and the first meshing tooth 20-2 of the clutch 20 is pushed out from the connecting portion of the dose setting knob 2, thereby releasing the restriction on the clutch 20 rotating around the axis, and the fifth meshing tooth 20-5 of the clutch 20 is engaged with the sixth meshing tooth 15-1 on the screw clutch 15;
同时卷簧7围绕轴线旋转的动力得以释放，在卷簧7的带动下，离合器20相对外壳10围绕轴线旋转，此时，离合器20带动驱动轴13、标度尺12反向旋转，与此同时，离合器20带动螺杆离合器15和螺杆14旋转，螺杆14发生轴向位移，推动卡式瓶中的活塞进行注射；At the same time, the power of the coil spring 7 rotating around the axis is released. Driven by the coil spring 7, the clutch 20 rotates relative to the housing 10 around the axis. At this time, the clutch 20 drives the drive shaft 13 and the scale 12 to rotate in the opposite direction. At the same time, the clutch 20 drives the screw clutch 15 and the screw 14 to rotate. The screw 14 undergoes axial displacement, pushing the piston in the cartridge bottle for injection.
完成注射后，松开注射按键1后，保持压簧3复位带动离合器20离开螺杆离合器15，离合器20的第一啮合齿20-2重新与剂量设定旋钮2的连接部连接，实现装置剂量设定功能和药品推进功能的复位，从而可实现装置多次重复使用。After the injection is completed, the injection button 1 is released, and the compression spring 3 is kept reset to drive the clutch 20 to leave the screw clutch 15, and the first meshing tooth 20-2 of the clutch 20 is reconnected to the connecting part of the dose setting knob 2, so that the dose setting function and the drug pushing function of the device are reset, so that the device can be reused multiple times.
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化，在不矛盾的情况下，各实施例之间可以互相组合形成新的实施例。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均包含在本发明的保护范围之内。The above description is only the preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. In the absence of contradiction, various embodiments may be combined with each other to form new embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410052119.7ACN117883664B (en) | 2024-01-12 | 2024-01-12 | Bidirectional dose setting unit and fluid delivery device |
| PCT/CN2024/118873WO2025148386A1 (en) | 2024-01-12 | 2024-09-13 | Bi-directional dose setting unit and fluid delivery apparatus |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410052119.7ACN117883664B (en) | 2024-01-12 | 2024-01-12 | Bidirectional dose setting unit and fluid delivery device |
| Publication Number | Publication Date |
|---|---|
| CN117883664A CN117883664A (en) | 2024-04-16 |
| CN117883664Btrue CN117883664B (en) | 2024-08-09 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410052119.7AActiveCN117883664B (en) | 2024-01-12 | 2024-01-12 | Bidirectional dose setting unit and fluid delivery device |
| Country | Link |
|---|---|
| CN (1) | CN117883664B (en) |
| WO (1) | WO2025148386A1 (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117883664B (en)* | 2024-01-12 | 2024-08-09 | 巨翊科技（上海）有限公司 | Bidirectional dose setting unit and fluid delivery device |
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| CN113747932A (en)* | 2019-05-07 | 2021-12-03 | 益首药物治疗股份公司 | Dosing device for an injection device |
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| CN117883664A (en) | 2024-04-16 |
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