CN116172663A - Pistol retroperitoneal fat removal equipment - Google Patents

Abstract

Translated fromChinese

本发明涉及医疗器械领域。手枪式腹膜后脂肪剔除设备，包括手枪状壳体，手枪状壳体包括横向设置的主体部以及竖直设置的手持部；主体部的一端可拆卸连接外管，主体部的另一端设有负压接头；还包括旋转刀，旋转刀呈中空管状结构，旋转刀可转动的设置在主体部，且旋转刀的一端与负压接头对接导通，旋转刀的另一端设有刃口，刃口伸出外管；还包括驱动件，驱动件与手持部滑动连接，且驱动件与手持部之间安装有复位弹簧，驱动件与手持部的滑动方向平行于旋转刀的旋转中心线方向；驱动件与旋转刀通过传动机构传动连接。本装置只需要将外管以及切割刀伸入手术切口后，即可对切口内的脂肪进行切割后，负压吸引取出。

The invention relates to the field of medical instruments. The pistol-type retroperitoneal fat removal equipment includes a pistol-shaped casing, and the pistol-shaped casing includes a horizontally arranged main body and a vertically arranged hand-held part; one end of the main body is detachably connected to an outer tube, and the other end of the main body is provided with a negative Compression joint; also includes a rotary knife, the rotary knife is a hollow tubular structure, the rotary knife is rotatably arranged on the main body, and one end of the rotary knife is connected with the negative pressure joint, and the other end of the rotary knife is provided with a cutting edge. Extending out of the outer tube; it also includes a driver, which is slidably connected to the handle, and a return spring is installed between the driver and the handle, and the sliding direction of the driver and the handle is parallel to the direction of the rotation centerline of the rotary knife; the driver It is connected with the rotary knife through a transmission mechanism. The device only needs to insert the outer tube and the cutting knife into the surgical incision, and then the fat in the incision can be cut and taken out by negative pressure suction.

Description

Translated fromChinese

手枪式腹膜后脂肪剔除设备Pistol retroperitoneal fat removal equipment

技术领域technical field

本发明涉及医疗器械领域，具体是脂肪剔除设备。The invention relates to the field of medical devices, in particular to fat removal equipment.

背景技术Background technique

肾癌是泌尿外科常见的恶性肿瘤，其发病率占成人恶性肿瘤2％-3％，虽然肾癌发病率低于膀胱癌及前列腺癌，但肾癌确是泌尿系致死率最高的恶性肿瘤。外科手术是局限性肾癌首选的治疗方法，肾癌手术入路包括经腹及经腹膜后(经腰)两种。其中经腹膜后入路具有损伤小、术中动脉寻找方便、对胃肠功能恢复影响小，患者可早期进食、术后康复快速等优点。但此种后腹腔空间相对较小，术中需清除腹膜后脂肪，以便具有更好的手术空间进行操作。Renal cancer is a common malignant tumor in urology, and its incidence rate accounts for 2%-3% of adult malignant tumors. Although the incidence of renal cancer is lower than that of bladder cancer and prostate cancer, renal cancer is indeed the malignant tumor with the highest mortality rate in the urinary system. Surgical operation is the preferred treatment for localized renal cell carcinoma. There are two surgical approaches for renal cell carcinoma: transabdominal and retroperitoneal (translumbar). Among them, the retroperitoneal approach has the advantages of less damage, convenient arterial search during operation, less impact on the recovery of gastrointestinal function, patients can eat early, and recover quickly after surgery. However, the retroperitoneal space is relatively small, and the retroperitoneal fat needs to be removed in order to have a better operating space for operation.

目前术中清除腹膜后脂肪采用的方式主要是通过术者将脂肪分割成小块取出或延长切口取出腹膜后脂肪。采用的分块取出方法费时费力，而延长切口取出腹膜后脂肪的方法给患者造成了不必要的损伤，且易出现伤口疼痛、延迟愈合等现象。At present, the method of removing retroperitoneal fat during operation is mainly to divide the fat into small pieces or extend the incision to remove the retroperitoneal fat. The block removal method is time-consuming and laborious, and the method of extending the incision to remove the retroperitoneal fat has caused unnecessary damage to the patient, and is prone to wound pain and delayed healing.

有鉴于此，如何快速取出腹膜后脂肪是亟待解决的一大难题，目前缺乏一种可以实现微创的同时能快速方便制造更好的后腹腔腔隙的设备。In view of this, how to quickly remove retroperitoneal fat is a major problem that needs to be solved urgently. At present, there is a lack of a device that can achieve minimal invasiveness and quickly and conveniently create a better retroperitoneal cavity.

发明内容Contents of the invention

针对现有技术存在的问题，本发明提供手枪式腹膜后脂肪剔除设备，以解决以上至少一个技术问题。Aiming at the problems existing in the prior art, the present invention provides a pistol type retroperitoneal fat removal device to solve at least one of the above technical problems.

为了达到上述目的，本发明提供了手枪式腹膜后脂肪剔除设备，其特征在于，包括手枪状壳体，所述手枪状壳体包括横向设置的主体部以及竖直设置的手持部；In order to achieve the above object, the present invention provides a pistol-type retroperitoneal fat removal device, which is characterized in that it includes a pistol-shaped housing, and the pistol-shaped housing includes a horizontally arranged main body part and a vertically arranged hand-held part;

所述主体部的一端可拆卸连接外管，所述主体部的另一端设有负压接头；One end of the main body is detachably connected to the outer tube, and the other end of the main body is provided with a negative pressure joint;

还包括旋转刀，所述旋转刀呈中空管状结构，所述旋转刀可转动的设置在所述主体部，且所述旋转刀的一端与所述负压接头对接导通，所述旋转刀的另一端设有刃口，所述刃口伸出所述外管；It also includes a rotary knife, the rotary knife is a hollow tubular structure, the rotary knife is rotatably arranged on the main body, and one end of the rotary knife is connected to the negative pressure joint, and the The other end is provided with a cutting edge, and the cutting edge extends out of the outer tube;

还包括驱动件，所述驱动件与所述手持部滑动连接，且所述驱动件与所述手持部之间安装有复位弹簧，所述驱动件与所述手持部的滑动方向平行于所述旋转刀的旋转中心线方向；It also includes a driving part, the driving part is slidingly connected with the handle part, and a return spring is installed between the driving part and the handle part, and the sliding direction of the driving part and the handle part is parallel to the The direction of the rotation centerline of the rotary knife;

所述驱动件与所述旋转刀通过传动机构传动连接；The driving member is connected to the rotary knife through a transmission mechanism;

所述传动机构包括主动齿轮、从动齿轮以及传动杆；The transmission mechanism includes a driving gear, a driven gear and a transmission rod;

所述手枪状壳体内转动连接有所述主动齿轮，所述切割刀的外壁上安装有与所述主动齿轮啮合的所述从动齿轮；The driving gear is rotatably connected in the pistol-shaped housing, and the driven gear meshing with the driving gear is installed on the outer wall of the cutting knife;

所述主动齿轮的底部设有凸轮结构，所述凸轮结构包括大头部以及小头部，所述大头部的外径大于所述小头部的外径，所述大头部的中心轴线与所述主动齿轮的中心轴线重合；The bottom of the driving gear is provided with a cam structure, the cam structure includes a large head and a small head, the outer diameter of the big head is larger than the outer diameter of the small head, the central axis of the big head Coincident with the central axis of the driving gear;

所述主动齿轮上连接有传动杆，所述传动杆的中心轴线与所述小头部的中心轴线重合；A transmission rod is connected to the driving gear, and the central axis of the transmission rod coincides with the central axis of the small head;

所述驱动件上设有与所述传动杆滑动连接的导向槽，所述导向槽包括顺序连接的前限位部、导向部以及后限位部，所述导向部为从前至后倾斜向左或者倾斜向右。The driving member is provided with a guide groove slidingly connected with the transmission rod, and the guide groove includes a front limiting part, a guiding part and a rear limiting part connected in sequence, and the guiding part is inclined to the left from front to back Or tilt to the right.

本装置只需要将外管以及切割刀伸入手术切口后，即可对切口内的脂肪进行切割后，负压吸引取出。无需延长切口，微创取出脂肪。快速、安全建立后腹腔腔隙，缩短手术时间，减少患者各项风险。The device only needs to insert the outer tube and the cutting knife into the surgical incision, and then the fat in the incision can be cut and taken out by negative pressure suction. Minimally invasive fat removal without extending the incision. Quickly and safely establish the retro-abdominal cavity, shorten the operation time, and reduce the risks of patients.

本装置通过驱动件的按压往复运动，进而实现了旋转刀的旋转运动。The device realizes the rotary motion of the rotary knife through the pressing and reciprocating motion of the driving part.

进一步优选的，所述前限位部以及所述后限位部的中心之间的距离等于所述小头部的中心至所述大头部中心距离的2倍。Further preferably, the distance between the centers of the front limiting portion and the rear limiting portion is equal to twice the distance from the center of the small head to the center of the large head.

便于通过驱动件的往复实现刀头的单向旋转运动。It is convenient to realize the unidirectional rotary motion of the cutter head through the reciprocating movement of the driving member.

进一步优选的，所述驱动件邻近所述手持部的一侧设有支撑柱，所述复位弹簧套设在所述支撑柱上。Further preferably, a support column is provided on a side of the driving member adjacent to the handle, and the return spring is sleeved on the support column.

进一步优选的，所述手枪状壳体包括左右设置的左壳体以及右壳体，所述左壳体与所述右壳体可拆卸连接；Further preferably, the pistol-shaped housing includes a left housing and a right housing arranged left and right, and the left housing is detachably connected to the right housing;

所述左壳体以及所述右壳体之间夹持有转动连接所述旋转刀的第一轴套以及第二轴套；A first bushing and a second bushing that are rotatably connected to the rotary knife are sandwiched between the left case and the right case;

所述第一轴套与所述第二轴套之间安装有所述从动齿轮。The driven gear is installed between the first sleeve and the second sleeve.

进一步优选地，所述左壳体以及所述右壳体之间夹持有转动连接所述主动齿轮的第三轴套；Further preferably, a third bushing that is rotatably connected to the driving gear is clamped between the left housing and the right housing;

所述左壳体以及所述右壳体设有嵌入所述第三轴套的轴套限位槽，所述轴套限位槽的下端开设有用于避让所述凸轮结构的让位槽，所述让位槽为左右贯穿的半圆形槽；The left housing and the right housing are provided with sleeve limit grooves embedded in the third sleeve, and the lower end of the sleeve limit grooves is provided with a relief groove for avoiding the cam structure. The step-off groove is a semicircular groove that runs through left and right;

所述轴套限位槽的下方连接有L形导向部，所述L形导向部包括竖直设置的纵向部以及横向设置的横向部，所述纵向部位于所述横向部的上方；An L-shaped guide part is connected to the bottom of the sleeve limiting groove, and the L-shaped guide part includes a vertically arranged longitudinal part and a horizontally arranged transverse part, and the longitudinal part is located above the transverse part;

所述驱动件上开设有滑入所述横向部的滑槽，所述滑槽的后端开口；A chute that slides into the transverse portion is provided on the driving member, and the rear end of the chute is open;

所述驱动件位于所述滑槽的上方区域位于所述左壳体的纵向部与所述右壳体的纵向部之间。The upper area of the driving member located in the chute is located between the longitudinal portion of the left housing and the longitudinal portion of the right housing.

进一步优选的，所述外管连接有护套；Further preferably, the outer tube is connected with a sheath;

所述护套与所述手枪状壳体螺纹连接，且所述护套与所述手枪状壳体之间设有锁止机构。The sheath is threadedly connected with the pistol-shaped housing, and a locking mechanism is provided between the sheath and the pistol-shaped housing.

进一步优选的，所述手枪状壳体上设有连接所述主体部以及手持部的连接片，所述连接片、所述主体部以及所述手持部围成环状结构，所述驱动件局部设置在所述环状结构内。Further preferably, the pistol-shaped housing is provided with a connecting piece connecting the main body part and the handle part, the connecting piece, the main body part and the handle part form a ring structure, and the driving part is partially placed within the ring structure.

便于手指的限位。通过连接片可以实现避免误触。Easy to place fingers. The avoidance of false touches can be achieved through the connecting piece.

进一步优选的，所述驱动件设有用于嵌入食指的内凹部。Further preferably, the driving member is provided with an inner recess for inserting the index finger.

便于按压拨动。Easy to press and toggle.

进一步优选地，所述左壳体与所述右壳体的端部设有外螺纹，所述左壳体与所述右壳体的外螺纹拼合构成所述负压接口；Further preferably, the ends of the left housing and the right housing are provided with external threads, and the external threads of the left housing and the right housing are combined to form the negative pressure interface;

所述左壳体以及所述右壳体的外螺纹与螺母连接。The external threads of the left housing and the right housing are connected with nuts.

便于左壳体与右壳体拼合后螺母固定。It is convenient to fix the nut after the left shell and the right shell are combined.

进一步优选地，所述外管远离所述主体部的端部设有向前延伸的延伸部，所述延伸部是开口向下的弧形结构，所述延伸部超出旋转刀，所述延伸部局部覆盖旋转刀。Further preferably, the end of the outer tube away from the main body is provided with an extension extending forward, the extension is an arc-shaped structure with an opening downward, the extension exceeds the rotary knife, and the extension Partial coverage of rotary knives.

在切割脂肪时，延伸部插入脂肪可以固定脂肪。When cutting fat, the extension inserts into the fat to immobilize the fat.

附图说明Description of drawings

图1为本发明具体实施例1的局部结构示意图；Fig. 1 is the local structure schematic diagram ofspecific embodiment 1 of the present invention;

图2为本发明具体实施例1的爆炸分解图；Fig. 2 is the explosive exploded view ofembodiment 1 of the present invention;

图3为本发明具体实施例1的局部结构示意图；Fig. 3 is the local structure schematic diagram of thespecific embodiment 1 of the present invention;

图4为本发明具体实施例1的局部结构示意图；Fig. 4 is the partial structure schematic diagram of thespecific embodiment 1 of the present invention;

图5为本发明具体实施例1的从动齿轮的结构示意图；5 is a schematic structural view of a driven gear inEmbodiment 1 of the present invention;

图6为本发明具体实施例1的从动齿轮的局部结构示意图；6 is a partial structural schematic diagram of a driven gear inEmbodiment 1 of the present invention;

图7为本发明具体实施例1的驱动件的结构示意图Fig. 7 is a structural schematic diagram of the driving member of thespecific embodiment 1 of the present invention

图8为本发明具体实施例2的局部结构示意图；Fig. 8 is a partial structural schematic diagram of aspecific embodiment 2 of the present invention;

图9为本发明具体实施例2的护套与外管连接状态下的结构示意图；Fig. 9 is a schematic structural view of the connection state between the sheath and the outer tube ofEmbodiment 2 of the present invention;

图10为本发明具体实施例2玻珠螺丝的结构示意图；Fig. 10 is a schematic structural view of a glass bead screw according toEmbodiment 2 of the present invention;

图11为本发明具体实施例3的外管的结构示意图；Fig. 11 is a schematic structural view of the outer tube ofEmbodiment 3 of the present invention;

图12为本发明具体实施例1的局部结构示意图。Fig. 12 is a partial structural schematic diagram ofEmbodiment 1 of the present invention.

其中：1为手枪状壳体，2为驱动件，3为外管，4为旋转刀，5为第一轴套，6为第二轴套，7为第三轴套，8为主动齿轮，9为从动齿轮，10为传动杆；11为护套，12为波珠螺丝，13为对位件，14为限位槽，16为定位孔；17为内管扣，18为纵向部，19为横向部，21为导向槽；31为延伸部；81为凸轮结构，82为盲孔。Among them: 1 is the pistol-shaped shell, 2 is the driving part, 3 is the outer tube, 4 is the rotary knife, 5 is the first bushing, 6 is the second bushing, 7 is the third bushing, 8 is the driving gear, 9 is a driven gear, 10 is a transmission rod; 11 is a sheath, 12 is a ball screw, 13 is an alignment member, 14 is a limit groove, 16 is a positioning hole; 17 is an inner pipe buckle, 18 is a longitudinal part, 19 is a transverse part, 21 is a guide groove; 31 is an extension part; 81 is a cam structure, and 82 is a blind hole.

具体实施方式Detailed ways

下面结合附图对本发明做进一步的说明。The present invention will be further described below in conjunction with the accompanying drawings.

参见图1至图7、图12，具体实施例1，手枪式腹膜后脂肪剔除设备，包括手枪状壳体1，手枪状壳体1包括横向设置的主体部以及竖直设置的手持部；主体部的一端可拆卸连接外管3，主体部的另一端设有负压接头。Referring to Fig. 1 to Fig. 7 and Fig. 12,specific embodiment 1, a pistol-type retroperitoneal fat removal device includes a pistol-shapedhousing 1, and the pistol-shapedhousing 1 includes a main body part arranged horizontally and a hand-held part arranged vertically; the main body One end of the main body is detachably connected to theouter tube 3, and the other end of the main body is provided with a negative pressure joint.

还包括旋转刀4，旋转刀4呈中空管状结构，旋转刀4可转动的设置在主体部，且旋转刀4的一端与负压接头对接导通，旋转刀4的另一端设有刃口，刃口伸出外管3。负压接头与旋转刀之间安装有内管扣17。内管扣的中央开设有转动连接旋转刀的通孔。Also includes arotary knife 4, therotary knife 4 is a hollow tubular structure, therotary knife 4 is rotatably arranged on the main body, and one end of therotary knife 4 is connected to the negative pressure joint, and the other end of therotary knife 4 is provided with a cutting edge. Cutting edge stretches outouter tube 3. Aninner pipe buckle 17 is installed between the negative pressure joint and the rotary knife. The central part of the inner pipe buckle is provided with a through hole for rotating and connecting the rotary knife.

还包括驱动件2，驱动件2与手持部滑动连接，且驱动件2与手持部之间安装有复位弹簧。驱动件2邻近手持部的一侧设有支撑柱，复位弹簧套设在支撑柱上。驱动件2与手持部的滑动方向平行于旋转刀4的旋转中心线方向；驱动件2与旋转刀4通过传动机构传动连接。It also includes a drivingpart 2, which is slidingly connected with the handle part, and a return spring is installed between the drivingpart 2 and the handle part. A support column is provided on a side of the drivingmember 2 adjacent to the handle, and a return spring is sheathed on the support column. The sliding direction of the drivingpart 2 and the handle part is parallel to the direction of the centerline of rotation of therotary knife 4; the drivingpart 2 and therotary knife 4 are connected through a transmission mechanism.

传动机构包括主动齿轮8、从动齿轮9以及传动杆10；壳体内转动连接有主动齿轮8，切割刀的外壁上安装有与主动齿轮8啮合的从动齿轮9；主动齿轮8的底部设有凸轮结构81，凸轮结构81包括大头部以及小头部，大头部的外径大于小头部的外径，大头部的中心轴线与主动齿轮8的中心轴线重合；主动齿轮8上连接有传动杆10。主动齿轮的底部开设有插接传动杆的盲孔82。传动杆10的中心轴线与小头部的中心轴线重合；驱动件2上设有与传动杆10滑动连接的导向槽21，导向槽21包括顺序连接的前限位部、导向部以及后限位部，导向部为从前至后倾斜向左或者倾斜向右。The transmission mechanism includes adriving gear 8, a drivengear 9 and atransmission rod 10; the housing is rotationally connected with adriving gear 8, and the outer wall of the cutter is equipped with a drivengear 9 meshing with thedriving gear 8; the bottom of thedriving gear 8 is provided withCam structure 81,cam structure 81 comprises big head and small head, and the outer diameter of big head is larger than the outer diameter of small head, and the central axis of big head coincides with the central axis of drivinggear 8;Transmission rod 10 is arranged. The bottom of the driving gear is provided with ablind hole 82 for inserting the transmission rod. The central axis of thetransmission rod 10 coincides with the central axis of the small head; the drivingmember 2 is provided with aguide groove 21 which is slidingly connected with thetransmission rod 10, and theguide groove 21 includes a front stopper, a guide part and a rear stopper which are sequentially connected The guide part is inclined to the left or right from front to back.

主体部的前端可拆卸连接外管。The front end of the main body is detachably connected to the outer tube.

导向槽从后至前向右倾斜；The guide groove is inclined to the right from back to front;

当驱动件处于初始状态下，传动杆位于导向槽的后限位部，凸轮结构的小头部朝左；When the driving part is in the initial state, the transmission rod is located at the rear limit part of the guide groove, and the small head of the cam structure faces left;

按压驱动件，驱动件后退，凸轮结构旋转180°(小头部从左至右向后旋转后向前旋转)，驱动件后退到极限位置；Press the driving part, the driving part moves backward, the cam structure rotates 180° (the small head rotates backward from left to right and then rotates forward), and the driving part moves back to the limit position;

当驱动件后退到极限位置时，传动杆位于导出槽的前限位部，，凸轮结构的小头部朝右；When the driving part retreats to the limit position, the transmission rod is located at the front limit part of the outlet groove, and the small head of the cam structure faces to the right;

松开驱动件，驱动件在复位弹簧的作用力下，驱动件前移，凸轮结构旋转180°(小头部从右至左向前旋转后向后旋转)，驱动件前移到初始状态。Unclamp the driving part, the driving part moves forward under the active force of the back-moving spring, the cam structure rotates 180 ° (the small head rotates forward from right to left and then rotates backward), and the driving part moves forward to the initial state.

传动杆的截面为圆形。The cross section of the transmission rod is circular.

本装置只需要将外管3以及切割刀伸入手术切口后，即可对切口内的脂肪进行切割后，负压吸引取出。无需延长切口，微创取出脂肪。快速、安全建立后腹腔腔隙，缩短手术时间，减少患者各项风险。本装置通过驱动件2的按压往复运动，进而实现了旋转刀4的旋转运动。负压接头连接负压吸引装置的吸引管。The device only needs to insert theouter tube 3 and the cutting knife into the surgical incision, and then the fat in the incision can be cut and taken out by negative pressure suction. Minimally invasive fat removal without extending the incision. Quickly and safely establish the retro-abdominal cavity, shorten the operation time, and reduce the risks of patients. The device realizes the rotary motion of therotary knife 4 through the pressing and reciprocating motion of the drivingmember 2 . The negative pressure connector is connected with the suction tube of the negative pressure suction device.

前限位部以及后限位部的中心之间的距离等于小头部的中心至大头部中心距离的2倍。便于通过驱动件2的往复实现刀头的单向旋转运动。The distance between the centers of the front limiting part and the rear limiting part is equal to twice the distance from the center of the small head to the center of the big head. It is convenient to realize the unidirectional rotary motion of the cutter head through the reciprocating of the drivingmember 2 .

壳体包括左右设置的左壳体以及右壳体，左壳体与右壳体可拆卸连接；左壳体以及右壳体之间夹持有转动连接旋转刀4的第一轴套5以及第二轴套6；第一轴套5与第二轴套6之间安装有从动齿轮9。The casing includes a left casing and a right casing arranged left and right, and the left casing and the right casing are detachably connected; thefirst shaft sleeve 5 and thefirst shaft sleeve 5 and the secondrotating knife 4 are sandwiched between the left casing and the right casing. Twoshaft sleeves 6; a drivengear 9 is installed between thefirst shaft sleeve 5 and thesecond shaft sleeve 6.

左壳体以及右壳体之间夹持有转动连接主动齿轮8的第三轴套7。Athird shaft sleeve 7 rotatably connected to thedriving gear 8 is clamped between the left housing and the right housing.

左壳体以及右壳体设有嵌入第三轴套7的轴套限位槽，轴套限位槽的下端开设有用于避让凸轮结构的让位槽，让位槽为左右贯穿的半圆形槽；轴套限位槽的下方连接有L形导向部，L形导向部包括竖直设置的纵向部18以及横向设置的横向部19，纵向部18位于横向部19的上方；驱动件2上开设有滑入横向部的滑槽，滑槽的后端开口；驱动件2位于滑槽的上方区域位于左壳体与右壳体的纵向部之间。The left housing and the right housing are provided with a sleeve limit groove embedded in thethird sleeve 7, and the lower end of the sleeve limit groove is provided with a relief groove for avoiding the cam structure, and the relief groove is a semicircle penetrating from left to right Groove; the bottom of the shaft sleeve limiting groove is connected with an L-shaped guide part, the L-shaped guide part includes a vertically arrangedlongitudinal part 18 and a horizontally arrangedtransverse part 19, and thelongitudinal part 18 is located above thetransverse part 19; on thedriver 2 There is a chute for sliding into the transverse part, and the rear end of the chute is open; thedriver 2 is located in the upper area of the chute and between the longitudinal parts of the left housing and the right housing.

壳体上设有连接主体部以及手持部的连接片，连接片、主体部以及手持部围成环状结构，驱动件2局部设置在环状结构内。便于手指的限位。通过连接片可以实现避免误触。The housing is provided with a connecting piece connecting the main body and the handle. The connecting piece, the main body and the handle form a ring structure, and thedriver 2 is partially arranged in the ring structure. Easy to place fingers. The avoidance of false touches can be achieved through the connecting piece.

驱动件2设有用于嵌入食指的内凹部。便于按压拨动。Thedriver 2 is provided with an inner recess for inserting the index finger. Easy to press and toggle.

左壳体与右壳体的端部设有外螺纹，左壳体与右壳体的外螺纹拼合构成负压接口；左壳体以及右壳体的外螺纹与螺母连接。便于左壳体与右壳体拼合后螺母固定。The ends of the left housing and the right housing are provided with external threads, and the external threads of the left housing and the right housing are assembled to form a negative pressure interface; the external threads of the left housing and the right housing are connected with nuts. It is convenient to fix the nut after the left shell and the right shell are combined.

参见图8至图10，具体实施例2，在具体实施例1的基础上，外管连接有护套；护套与壳体螺纹连接，且护套与壳体之间设有锁止机构。锁止机构可以包括玻珠螺丝与限位槽。具体的，壳体的端部设有螺纹连接护套的连接部，连接部上开设有三个定位孔16，定位孔16内螺纹连接有波珠螺丝12，波珠螺丝12的端部设有滚珠，滚珠的延伸出连接部的外侧；且三个定位孔均开设在左壳体或者右壳体上；连接部设有外螺纹，护套11设有与外螺纹相匹配的内螺纹，护套11上设有嵌入滚珠的限位槽14，限位槽呈球面状；壳体的外侧设有用于标识滚珠螺丝位置的定位标识结构；护套的外侧设有对位件13，对位件13位于限位槽14的外围。便于直观的获知护套与壳体的相对旋转角度，调整切割刀的外露深度。对位件可以是长度方向为前后方向的条状突起。定位标识结构可以是周向排布的三个长度方向为前后方向的条状突起。Referring to Fig. 8 to Fig. 10,specific embodiment 2, on the basis ofspecific embodiment 1, the outer tube is connected with a sheath; the sheath is screwed to the housing, and a locking mechanism is provided between the sheath and the housing. The locking mechanism may include glass bead screws and limiting slots. Specifically, the end of the housing is provided with a connecting portion that is threadedly connected to the sheath, and threepositioning holes 16 are provided on the connecting portion. The positioning holes 16 are internally threaded with awave ball screw 12, and the end of the wave ball screw 12 is provided with a ball. , the ball extends out of the outer side of the connecting part; and the three positioning holes are opened on the left or right housing; the connecting part is provided with external threads, and thesheath 11 is provided with internal threads matching the external threads, and thesheath 11 is provided with alimit groove 14 embedded with balls, and the limit groove is spherical; the outside of the housing is provided with a positioning mark structure for marking the position of the ball screw; Located on the periphery of the limitingslot 14. It is convenient to intuitively know the relative rotation angle between the sheath and the shell, and adjust the exposed depth of the cutting knife. The alignment member may be a strip-shaped protrusion whose length direction is the front-to-back direction. The positioning mark structure may be three strip-shaped protrusions arranged in the circumferential direction with the longitudinal direction being the front and rear directions.

参见图11，具体实施例3，在具体实施例1的基础上，外管远离主体部的端部设有向前延伸的延伸部31，延伸部31是开口向下的弧形结构，延伸部31超出旋转刀，延伸部局部覆盖旋转刀。在切割脂肪时，延伸部插入脂肪可以固定脂肪。延伸部的圆心角小于180°，且大于90°。Referring to Figure 11,specific embodiment 3, on the basis ofspecific embodiment 1, the end of the outer tube away from the main body is provided with anextension 31 extending forward, theextension 31 is an arc-shaped structure with an opening downward, and theextension 31 beyond the rotary knife, the extension partially covers the rotary knife. When cutting fat, the extension inserts into the fat to immobilize the fat. The central angle of the extension part is less than 180° and greater than 90°.

以上仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。The above are only preferred embodiments of the present invention, and it should be pointed out that for those of ordinary skill in the art, some improvements and modifications can also be made without departing from the principle of the present invention, and these improvements and modifications should also be considered Be the protection scope of the present invention.

Claims (10)

1. The pistol type retroperitoneal fat removing device is characterized by comprising a pistol-shaped shell, wherein the pistol-shaped shell comprises a main body part which is transversely arranged and a hand-held part which is vertically arranged;

one end of the main body part is detachably connected with the outer tube, and the other end of the main body part is provided with a negative pressure joint;

the rotary knife is of a hollow tubular structure, the rotary knife is rotatably arranged on the main body part, one end of the rotary knife is in butt joint and conduction with the negative pressure joint, the other end of the rotary knife is provided with a cutting edge, and the cutting edge extends out of the outer tube;

the rotary knife is characterized by further comprising a driving piece, wherein the driving piece is in sliding connection with the handheld part, a reset spring is arranged between the driving piece and the handheld part, and the sliding direction of the driving piece and the handheld part is parallel to the direction of the rotation center line of the rotary knife;

the driving piece is in transmission connection with the rotary knife through a transmission mechanism;

the transmission mechanism comprises a driving gear, a driven gear and a transmission rod;

the driving gear is rotationally connected with the pistol-shaped shell, and the driven gear meshed with the driving gear is arranged on the outer wall of the cutting knife;

the bottom of the driving gear is provided with a cam structure, the cam structure comprises a large head part and a small head part, the outer diameter of the large head part is larger than that of the small head part, and the central axis of the large head part is coincident with the central axis of the driving gear;

the driving gear is connected with a transmission rod, and the central axis of the transmission rod coincides with the central axis of the small head;

the driving piece is provided with a guide groove which is in sliding connection with the transmission rod, the guide groove comprises a front limiting part, a guide part and a rear limiting part which are sequentially connected, and the guide part is inclined leftwards or rightwards from front to rear.

2. The pistol type retroperitoneal fat removal device of claim 1, wherein: the distance between the centers of the front limiting part and the rear limiting part is equal to 2 times of the distance from the center of the small head to the center of the large head.

3. The pistol type retroperitoneal fat removal device of claim 1, wherein: the driving piece is provided with a support column adjacent to one side of the handheld part, and the reset spring is sleeved on the support column.

4. The pistol type retroperitoneal fat removal device of claim 1, wherein: the pistol-shaped shell comprises a left shell and a right shell which are arranged left and right, and the left shell is detachably connected with the right shell;

a first shaft sleeve and a second shaft sleeve which are rotationally connected with the rotary knife are clamped between the left shell and the right shell;

the driven gear is arranged between the first shaft sleeve and the second shaft sleeve.

5. The pistol type retroperitoneal fat removal device of claim 4, wherein: the third shaft sleeve which is rotationally connected with the driving gear is clamped between the left shell and the right shell;

the left shell and the right shell are provided with shaft sleeve limiting grooves embedded into the third shaft sleeve, the lower ends of the shaft sleeve limiting grooves are provided with yielding grooves for avoiding the cam structure, and the yielding grooves are semicircular grooves penetrating up and down;

an L-shaped guide part is connected below the shaft sleeve limiting groove and comprises a vertical longitudinal part and a transverse part, wherein the transverse part is transversely arranged, and the longitudinal part is positioned above the transverse part;

the driving piece is provided with a sliding groove sliding into the transverse part, and the rear end of the sliding groove is provided with an opening;

the driving piece is located in an area above the sliding groove and located between the longitudinal part of the left shell and the longitudinal part of the right shell.

6. The pistol type retroperitoneal fat removal device of claim 4, wherein: the outer tube is connected with a sheath;

the sheath with pistol form casing threaded connection, just the sheath with be equipped with locking mechanism between the pistol form casing.

7. The pistol type retroperitoneal fat removal device of claim 1, wherein: the pistol-shaped shell is provided with a connecting sheet connected with the main body part and the handheld part, the connecting sheet, the main body part and the handheld part enclose into an annular structure, and the driving piece is locally arranged in the annular structure.

8. The pistol type retroperitoneal fat removal device of claim 1, wherein: the driver is provided with an indent for embedding an index finger.

9. The pistol type retroperitoneal fat removal device of claim 4, wherein: external threads are arranged at the end parts of the left shell and the right shell, and the external threads of the left shell and the right shell are spliced to form the negative pressure interface;

and the left shell and the right shell are connected with nuts through external threads.

10. The pistol type retroperitoneal fat removal device of claim 1, wherein: the outer tube is kept away from the tip of main part is equipped with the extension that extends forward, the extension is the arc structure that the opening is decurrent, the extension exceeds the rotary knife, the extension part partial coverage rotary knife.

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