技术领域technical field
本实用新型涉及医疗器械技术领域，特别是涉及一种带超声穿刺功能的活检装置。The utility model relates to the technical field of medical instruments, in particular to a biopsy device with an ultrasonic puncture function.
背景技术Background technique
活检装置用于对病人体内的软组织进行活体取样。活检装置通常包括手柄以及安装于手柄上的刀具。刀具包括内刀管、外套于内刀管的外刀管以及设置在外刀管前端的穿刺头，外刀管靠其前端的管壁上沿径向开有取样槽。穿刺头穿刺进入表皮后，在负压作用下软组织被吸入取样槽，此时内刀管向前旋切将软组织切下并容纳于内刀管前端。Biopsy devices are used to take a living sample of soft tissue in a patient. Biopsy devices generally include a handle and a knife mounted on the handle. The cutting tool includes an inner knife tube, an outer knife tube sheathed on the inner knife tube and a puncture head arranged at the front end of the outer knife tube, and a sampling groove is opened radially on the wall of the outer knife tube near its front end. After the puncture head punctures into the epidermis, the soft tissue is sucked into the sampling groove under the action of negative pressure. At this time, the inner knife tube rotates forward to cut off the soft tissue and accommodate it in the front end of the inner knife tube.
活检手术过程中，穿刺头从刺破表皮之后，到离开表皮之后，都可能出现流血不止的情况，影响手术开展或者危及患者安全。为了解决此问题，有的活检装置采用在刀具的前端安装超声换能器，当高频电接入超声换能器之后，超声换能器中的压电陶瓷产生对应频率的振动，并带动穿刺头做超声振动。这种活检装置依靠超声振动刺穿皮肤，要求超声换能器输出的超声能量大，超声换能器的电极片和压电陶瓷片的片数就较多，导致超声换能器的长度较长，从而导致穿刺头与取样槽之间的间距较长，刀具插入人体部分的长度就较长，对人体组织伤害大。During the biopsy operation, the puncture head may bleed continuously after puncturing the epidermis and leaving the epidermis, affecting the operation or endangering the safety of the patient. In order to solve this problem, some biopsy devices use an ultrasonic transducer installed at the front end of the knife. When the high-frequency electricity is connected to the ultrasonic transducer, the piezoelectric ceramics in the ultrasonic transducer generate vibrations of corresponding frequencies and drive the puncture. The head vibrates ultrasonically. This kind of biopsy device relies on ultrasonic vibration to pierce the skin, which requires a large ultrasonic energy output by the ultrasonic transducer, and the number of electrode sheets and piezoelectric ceramic sheets of the ultrasonic transducer is large, resulting in a longer length of the ultrasonic transducer , thereby causing the distance between the puncture head and the sampling groove to be longer, the length of the cutter inserted into the human body is longer, and the damage to human tissue is large.
发明内容Contents of the invention
针对上述现有技术现状，本实用新型所要解决的技术问题在于，提供一种带超声穿刺功能的活检装置，其穿入人体部分短，对人体组织伤害少。In view of the above-mentioned current state of the art, the technical problem to be solved by this utility model is to provide a biopsy device with an ultrasonic puncture function, which penetrates into the human body in a short time and causes less damage to human tissue.
为了解决上述技术问题，本实用新型所提供的一种带超声穿刺功能的活检装置，包括：刀具和手柄，所述刀具包括内刀管、外套于所述内刀管的外刀管以及设置在所述外刀管前端的穿刺头，所述外刀管的靠近其前端的管壁上开设有取样槽，所述外刀管的后端固定在所述手柄上；还包括：超声换能器和变幅杆，所述换能器设于所述手柄内，所述变幅杆的后端与所述换能器的超声输出端连接，所述变幅杆的前端与所述穿刺头连接。In order to solve the above-mentioned technical problems, the utility model provides a biopsy device with ultrasonic puncture function, including: a knife and a handle, the knife includes an inner knife tube, an outer knife tube that is sheathed on the inner knife tube, and is arranged on The puncture head at the front end of the outer knife tube, a sampling groove is opened on the wall of the outer knife tube close to its front end, and the rear end of the outer knife tube is fixed on the handle; it also includes: an ultrasonic transducer and a horn, the transducer is arranged in the handle, the rear end of the horn is connected to the ultrasonic output end of the transducer, and the front end of the horn is connected to the puncture head .
上述的带超声穿刺功能的活检装置，将超声换能器后置在手柄内，使得穿刺头与取样槽之间的间距大大缩短，刀具插入人体部分变短，减小了对人体组织的伤害。In the above-mentioned biopsy device with ultrasonic puncture function, the ultrasonic transducer is placed behind the handle, so that the distance between the puncture head and the sampling tank is greatly shortened, the part where the knife is inserted into the human body is shortened, and the damage to human tissue is reduced.
在其中一个实施例中，所述变幅杆位于所述外刀管的内壁与所述内刀管的外壁之间。In one of the embodiments, the horn is located between the inner wall of the outer knife tube and the outer wall of the inner knife tube.
在其中一个实施例中，所述变幅杆与所述内刀管并排布置。In one of the embodiments, the horn and the inner cutter tube are arranged side by side.
在其中一个实施例中，所述超声换能器固定在所述手柄上。In one of the embodiments, the ultrasonic transducer is fixed on the handle.
在其中一个实施例中，所述超声换能器与所述内刀管之间设置有隔板In one of the embodiments, a partition is provided between the ultrasonic transducer and the inner knife tube
在其中一个实施例中，所述变幅杆为中空管状，所述变幅杆外套于所述内刀管。In one of the embodiments, the horn is a hollow tube, and the horn is sheathed on the inner knife tube.
在其中一个实施例中，所述超声换能器的中心设置穿孔，所述内刀管的后端穿过所述穿孔。In one of the embodiments, a perforation is set in the center of the ultrasonic transducer, and the rear end of the inner knife tube passes through the perforation.
在其中一个实施例中，在所述变幅杆的与所述取样槽相对应的位置设置有开口。In one of the embodiments, an opening is provided at a position of the horn corresponding to the sampling slot.
在其中一个实施例中，所述变幅杆的前端与所述穿刺头螺纹连接。In one embodiment, the front end of the horn is screwed to the piercing head.
在其中一个实施例中，所述超声换能器包括若干电极片、若干压电陶瓷片以及将若干所述电极片和若干所述压电陶瓷片依次连接在一起的后盖板。In one of the embodiments, the ultrasonic transducer includes several electrode sheets, several piezoelectric ceramic sheets, and a back cover for sequentially connecting the several electrode sheets and the several piezoelectric ceramic sheets together.
本实用新型附加技术特征所具有的有益效果将在本说明书具体实施方式部分进行说明。The beneficial effects of the additional technical features of the utility model will be described in the specific implementation mode of this specification.
附图说明Description of drawings
图1为本实用新型实施例一中的带超声穿刺功能的活检装置的剖视结构示意图；Fig. 1 is a schematic cross-sectional structure diagram of a biopsy device with ultrasonic puncture function in Embodiment 1 of the present utility model;
图2为本实用新型实施例二中的带超声穿刺功能的活检装置的剖视结构示意图。Fig. 2 is a schematic cross-sectional structure diagram of the biopsy device with ultrasonic puncture function in the second embodiment of the present invention.
附图标记说明：10、手柄；11、壳体；121、驱动电机；122、第一齿轮；123、第二齿轮；124、螺套；20、刀具；21、外刀管；212、取样槽；22、内刀管；23、穿刺头；24、密封件；31、超声换能器；311、电极片；312、压电陶瓷片；313、后盖板；314、前盖板；314a、凸台；32、变幅杆；321、凸台；322、开口；33、隔板。Description of reference signs: 10, handle; 11, housing; 121, drive motor; 122, first gear; 123, second gear; 124, screw sleeve; 20, cutter; 21, outer cutter tube; 212, sampling groove ; 22, inner knife tube; 23, puncture head; 24, seal; 31, ultrasonic transducer; 311, electrode sheet; 312, piezoelectric ceramic sheet; 313, rear cover plate; 314, front cover plate; 314a, Boss; 32, horn; 321, boss; 322, opening; 33, partition.
具体实施方式Detailed ways
下面参考附图并结合实施例对本实用新型进行详细说明。需要说明的是，在不冲突的情况下，以下各实施例及实施例中的特征可以相互组合。The utility model is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.
以下实施例中的“前”、“后”是以超声换能器的超声能量输出方向为参考。而且，“前”、“后”等位置特征仅为相对的位置表示,不应理解为绝对位置，更不能理解为对本实用新型保护范围的限制。"Front" and "rear" in the following embodiments refer to the ultrasonic energy output direction of the ultrasonic transducer. Moreover, position features such as "front" and "rear" are only relative position representations, and should not be understood as absolute positions, let alone as limitations on the protection scope of the present utility model.
图1所示为本实用新型实施例一中的带超声穿刺功能的活检装置的剖视结构示意图。如图1所示，带超声穿刺功能的活检装置包括手柄10、刀具20、超声换能器31及变幅杆32。其中，手柄10包括壳体11、刀具驱动装置及控制电路板(图中未示出)，壳体11为方便手握持的条形，刀具驱动装置及控制电路板容纳在壳体11内。FIG. 1 is a schematic cross-sectional structure diagram of a biopsy device with ultrasonic puncture function in Embodiment 1 of the present utility model. As shown in FIG. 1 , the biopsy device with ultrasonic puncture function includes a handle 10 , a knife 20 , an ultrasonic transducer 31 and a horn 32 . Wherein, the handle 10 includes a housing 11 , a knife driving device and a control circuit board (not shown in the figure), the housing 11 is a bar shape that is convenient to hold, and the knife driving device and the control circuit board are accommodated in the housing 11 .
刀具20包括外刀管21、穿刺头23及内刀管22，外刀管21的后端固定地安装在壳体11的前端内，外刀管21的靠近其前端位置沿径向开设有取样槽212。穿刺头23为尖锥形，或开刃的平条形，或其他利于穿刺组织的形状，这里不作限定。穿刺头23安装在外刀管21的前端。本实施例中，穿刺头23与外刀管21的前端之间设置有密封件24。内刀管22穿设在外刀管21内，且可相对于所述外刀管21旋转并且轴向往复运动，内刀管22的前端具有用于切割穿过取样槽212的组织的刀头，内刀管22的后端插入壳体11内，且与刀具驱动装置连接。当刀具驱动装置驱动内刀管22作旋转并且轴向往复运动时，内刀管22的刀头与取样槽212相对剪切运动，实现刀头对进入到取样槽212中的组织的切割功能。The cutter 20 includes an outer cutter tube 21, a puncture head 23 and an inner cutter tube 22. The rear end of the outer cutter tube 21 is fixedly installed in the front end of the housing 11, and the outer cutter tube 21 is radially provided with sampling holes near its front end. Groove 212. The puncture head 23 is in the shape of a pointed cone, or a flat strip with a blade, or other shapes that are beneficial to puncture tissue, which is not limited here. The puncture head 23 is installed on the front end of the outer knife tube 21 . In this embodiment, a seal 24 is provided between the puncture head 23 and the front end of the outer knife tube 21 . The inner knife tube 22 is penetrated in the outer knife tube 21, and can rotate relative to the outer knife tube 21 and axially reciprocate. The front end of the inner knife tube 22 has a knife head for cutting through the sampling groove 212. The rear end of the inner knife tube 22 is inserted into the housing 11 and connected with the knife driving device. When the knife driving device drives the inner knife tube 22 to rotate and reciprocate axially, the knife head of the inner knife tube 22 and the sampling groove 212 will shear relative to each other to realize the cutting function of the knife head on the tissue entering the sampling groove 212 .
如图1所示，本实施例中的刀具驱动装置包括驱动电机121、齿轮传动机构及螺套124，作为示例，齿轮传动机构包括第一齿轮122和第二齿轮123，第一齿轮122安装在驱动电机121的输出轴上，第二齿轮123与第一齿轮122啮合，第二齿轮123外套于螺套124上，而螺套124外套于内刀管22的后端上。驱动电机121工作时，第一齿轮122旋转，第一齿轮122带动第二齿轮123旋转，进而螺套124旋转，内刀管22的靠近后端的后段上形成有与螺套124配合的螺纹，从而内刀管22可以实现旋转并且轴向往复运动。As shown in Figure 1, the tool driving device in the present embodiment includes a driving motor 121, a gear transmission mechanism and a screw sleeve 124. As an example, the gear transmission mechanism includes a first gear 122 and a second gear 123, and the first gear 122 is installed on On the output shaft of the driving motor 121 , the second gear 123 meshes with the first gear 122 , the second gear 123 is sleeved on the screw sleeve 124 , and the screw sleeve 124 is sleeved on the rear end of the inner knife tube 22 . When the driving motor 121 works, the first gear 122 rotates, the first gear 122 drives the second gear 123 to rotate, and then the screw sleeve 124 rotates, and the rear section near the rear end of the inner knife tube 22 is formed with threads that cooperate with the screw sleeve 124, Therefore, the inner knife tube 22 can realize rotation and axial reciprocating movement.
超声换能器31设置在外壳内，本实施例中的超声换能器31包括若干压电陶瓷片312、若干电极片311以及用于将若干压电陶瓷片312和若干电极片311连接在一起的后盖板313，后盖板313的前端穿过压电陶瓷片312和电极片311与变幅杆32的后端螺纹连接，变幅杆32的前端与所述穿刺头23螺纹连接。本实施例中，所述变幅杆32位于所述外刀管21的内壁与所述内刀管22的外壁之间，且与所述内刀管22并排布置。所述变幅杆32的后端设置有凸台321，超声换能器31通过凸台321固定在壳体11的内壁上。为了保护超声换能器31，在超声换能器31与所述内刀管22之间设置有隔板33。The ultrasonic transducer 31 is arranged in the housing, and the ultrasonic transducer 31 in this embodiment includes several piezoelectric ceramic sheets 312, several electrode sheets 311, and a plurality of piezoelectric ceramic sheets 312 and several electrode sheets 311. The rear cover 313, the front end of the rear cover 313 passes through the piezoelectric ceramic sheet 312 and the electrode sheet 311 and is screwed to the rear end of the horn 32, and the front end of the horn 32 is screwed to the puncture head 23. In this embodiment, the horn 32 is located between the inner wall of the outer knife tube 21 and the outer wall of the inner knife tube 22 , and is arranged side by side with the inner knife tube 22 . The rear end of the horn 32 is provided with a boss 321 , and the ultrasonic transducer 31 is fixed on the inner wall of the casing 11 through the boss 321 . In order to protect the ultrasonic transducer 31 , a partition 33 is provided between the ultrasonic transducer 31 and the inner knife tube 22 .
本实施例中的带超声穿刺功能的活检装置，活检手术过程中，在穿刺头23插入皮肤或者软组织的任意过程，只要打开超声能量控制开关，启动超声换能器，高频交流电能量通过电极片311传递到压电陶瓷片312上，利用压电陶瓷片312的逆压电效应，将电能量转换为机械能量，通过变幅杆32将机械能量传递至穿刺头23，带动穿刺头23产生高频振动，从而实现超声穿刺功能。另外，在穿刺头23插入皮肤后至退出皮肤之间的任意过程，只要打开超声能量控制开关，启动超声换能器，人体组织在穿刺头23超声振动的热效应下产生凝血效果。需要指出的是，由于将超声换能器后置在手柄10内，使得穿刺头23与取样槽212之间的间距大大缩短，刀具20插入人体部分变短，减小了对人体组织的伤害。In the biopsy device with ultrasonic puncture function in this embodiment, during the biopsy operation, when the puncture head 23 is inserted into the skin or soft tissue in any process, as long as the ultrasonic energy control switch is turned on, the ultrasonic transducer is activated, and the high-frequency alternating current energy passes through the electrode sheet 311 is transmitted to the piezoelectric ceramic sheet 312, and the electric energy is converted into mechanical energy by using the inverse piezoelectric effect of the piezoelectric ceramic sheet 312, and the mechanical energy is transmitted to the piercing head 23 through the horn 32, driving the piercing head 23 to generate high Frequency vibration, so as to realize the ultrasonic puncture function. In addition, during any process between the insertion of the puncture head 23 into the skin and its exit from the skin, as long as the ultrasonic energy control switch is turned on and the ultrasonic transducer is activated, the human tissue will produce blood coagulation effect under the thermal effect of the ultrasonic vibration of the puncture head 23 . It should be pointed out that since the ultrasonic transducer is placed behind the handle 10, the distance between the puncture head 23 and the sampling groove 212 is greatly shortened, and the part where the knife 20 is inserted into the human body is shortened, which reduces the damage to human tissue.
图2所示为本实用新型实施例二中的带超声穿刺功能的活检装置的剖视结构示意图。如图2所示，本实施例中的带超声穿刺功能的活检装置的结构与实施例一中的带超声穿刺功能的活检装置的结构大体相同，不同之处在于：所述变幅杆32为中空管状，所述变幅杆32外套于所述内刀管22，此种结构更加紧凑，使得刀具20的外径小。为了避免变幅杆32对切割组织造成干涉，在所述变幅杆32的与所述取样槽212相对应的位置设置有开口322，组织通过取样槽212、开口322进入变幅杆32内。需要指出的是，设计开口322的大小时，应确保在变幅杆32轴向振动过程中，开口322至少部分与取样槽212相对，以不影响正常取样。优选地，所述超声换能器的中心设置穿孔，所述内刀管22的后端穿过所述穿孔。FIG. 2 is a schematic cross-sectional structure diagram of a biopsy device with ultrasonic puncture function in Embodiment 2 of the present utility model. As shown in Figure 2, the structure of the biopsy device with ultrasonic puncture function in this embodiment is substantially the same as the structure of the biopsy device with ultrasonic puncture function in Embodiment 1, except that the horn 32 is The horn 32 is hollow and tubular, and the horn 32 is overlaid on the inner cutter tube 22 . This kind of structure is more compact, so that the outer diameter of the cutter 20 is small. In order to prevent the horn 32 from interfering with the cutting tissue, an opening 322 is provided at a position of the horn 32 corresponding to the sampling slot 212 , and tissue enters the horn 32 through the sampling slot 212 and the opening 322 . It should be pointed out that when designing the size of the opening 322, it should be ensured that the opening 322 is at least partially opposite to the sampling groove 212 during the axial vibration of the horn 32, so as not to affect normal sampling. Preferably, a perforation is set in the center of the ultrasonic transducer, and the rear end of the inner knife tube 22 passes through the perforation.
本实施例的超声换能器31包括前盖板314、若干压电陶瓷片312、若干电极片311以及用于将前盖板314、若干压电陶瓷片312和若干电极片311连接在一起的后盖板313，后盖板313的前端穿过压电陶瓷片312、电极片311与前盖板314的后端连接，前盖板314的前端与变幅杆32的后端连接。前盖板314上设置有凸台，超声换能器31通过前盖板314上的凸台314a安装在壳体11内。The ultrasonic transducer 31 of the present embodiment comprises a front cover plate 314, several piezoelectric ceramic sheets 312, several electrode sheets 311, and a joint for connecting the front cover plate 314, several piezoelectric ceramic sheets 312 and several electrode sheets 311 together. The rear cover 313 , the front end of the rear cover 313 is connected to the rear end of the front cover 314 through the piezoelectric ceramic sheet 312 and the electrode sheet 311 , and the front end of the front cover 314 is connected to the rear end of the horn 32 . A boss is provided on the front cover 314 , and the ultrasonic transducer 31 is installed in the housing 11 through the boss 314 a on the front cover 314 .
本实施例中的带超声穿刺功能的活检装置，由于将超声换能器后置在手柄10内，使得穿刺头23与取样槽212之间的间距大大缩短，刀具20插入人体部分变短，减小了对人体组织的伤害。In the biopsy device with ultrasonic puncture function in this embodiment, since the ultrasonic transducer is placed behind the handle 10, the distance between the puncture head 23 and the sampling groove 212 is greatly shortened, and the insertion of the knife 20 into the human body is shortened, reducing the Little damage to human tissue.
以上所述实施例仅表达了本实用新型的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对本实用新型专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本实用新型构思的前提下，还可以做出若干变形和改进，这些都属于本实用新型的保护范围。The above-mentioned embodiments only express several implementations of the utility model, and the description thereof is relatively specific and detailed, but it should not be construed as limiting the patent scope of the utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822223115.3UCN209529191U (en) | 2018-12-27 | 2018-12-27 | Biopsy device with ultrasonic puncture function |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822223115.3UCN209529191U (en) | 2018-12-27 | 2018-12-27 | Biopsy device with ultrasonic puncture function |
| Publication Number | Publication Date |
|---|---|
| CN209529191Utrue CN209529191U (en) | 2019-10-25 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822223115.3UActiveCN209529191U (en) | 2018-12-27 | 2018-12-27 | Biopsy device with ultrasonic puncture function |
| Country | Link |
|---|---|
| CN (1) | CN209529191U (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111956268A (en)* | 2020-08-11 | 2020-11-20 | 王新铮 | Full-automatic biopsy puncture device for mammary gland |
| CN113413172A (en)* | 2021-05-11 | 2021-09-21 | 重庆西山科技股份有限公司 | Electrotomy biopsy needle, electrotomy biopsy needle kit and vacuum assisted breast biopsy system |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111956268A (en)* | 2020-08-11 | 2020-11-20 | 王新铮 | Full-automatic biopsy puncture device for mammary gland |
| CN113413172A (en)* | 2021-05-11 | 2021-09-21 | 重庆西山科技股份有限公司 | Electrotomy biopsy needle, electrotomy biopsy needle kit and vacuum assisted breast biopsy system |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address | Address after:No. 2 Kangzhu Road, Kangmei Street, Liangjiang New District, Yubei District, Chongqing 401123 Patentee after:CHONGQING XISHAN SCIENCE & TECHNOLOGY Co.,Ltd. Country or region after:China Address before:400000 Chongqing 500301 high tech Development Center (No.9, middle section of Huangshan Avenue) Patentee before:CHONGQING XISHAN SCIENCE & TECHNOLOGY Co.,Ltd. Country or region before:China |