CN221083681U

CN221083681U - Abdominal wall fat extraction element

Info

Publication number: CN221083681U
Application number: CN202320633050.8U
Authority: CN
Inventors: 赵万红; 魏峰; 王佰言; 蒙珊; 沈莹
Original assignee: Second Affiliated Hospital School of Medicine of Xian Jiaotong University
Current assignee: Second Affiliated Hospital School of Medicine of Xian Jiaotong University
Priority date: 2023-03-27
Filing date: 2023-03-27
Publication date: 2024-06-07
Anticipated expiration: 2033-03-27

Abstract

The utility model discloses an abdominal wall fat extraction device, which comprises a sleeve, a traction sliding block, a sliding sleeve, a control block, a rack and a ratchet; the inner part of the sleeve is provided with a cavity, the traction sliding block is arranged in the cavity, the sliding sleeve is sleeved outside the sleeve and can synchronously move along the axial direction of the cavity with the traction sliding block, the front end of the traction sliding block is used for being connected with a piston handle of the injector, the control block is fixed in the cavity of the sleeve, one end of the rack is connected with the traction sliding block, the ratchet is arranged in the control block and is connected with the eccentric mechanism, and the eccentric mechanism is used for controlling the meshing state of the ratchet and the rack; the device realizes the fine adjustment of the negative pressure in the syringe by adjusting the position of the piston rod of the syringe through the rack type ratchet mechanism, improves the extraction efficiency of adipose tissues and reduces the operation difficulty.

Description

Abdominal wall fat extraction element

Technical Field

The utility model relates to the technical field of medical appliances, in particular to an abdominal wall fat extraction device.

Background

With the advent of the elderly population in China, primary/secondary light chain amyloidosis patients have increased significantly, systemic amyloidosis refers to extracellular deposition of various proteins, collectively called amyloid proteins, and these amyloid fibrils with beta-pleated configuration are deposited at heart, kidney and other sites, causing damage to the function of these organs, greatly affecting patient health and life, and such diseases require kidney biopsies, cardiac biopsy to demonstrate the presence of amyloid proteins, with significant risk of invasive surgery, fat liposuction under local anesthesia under anterior abdominal wall for diagnosis of amyloid in systemic amyloidosis, to evaluate by detecting amyloid deposition fibrous lipid tissue in small vessel walls.

Needle aspiration type abdominal wall fat biopsy is the most reliable and minimally invasive systemic amyloidosis examination means at present, a 10-20ml syringe is generally used in the abdominal wall fat aspiration process, a syringe piston is continuously pulled up to form negative pressure aspiration fat particles under a local anesthesia state, an operator is required to control a needle head by the other hand under the condition of maintaining the large negative pressure of the syringe by one hand, the needle is advanced subcutaneously in multiple directions and aspiration is repeated, the skill level requirement on the operator is high, and meanwhile, the self strength of medical staff is also required to a certain extent.

Disclosure of utility model

Aiming at the problems in the prior art, the utility model provides an abdominal wall fat extraction device which dynamically adjusts the negative pressure suction force of a syringe through a ratchet mechanism, realizes the rapid extraction of adipose tissues and improves the extraction efficiency.

The utility model is realized by the following technical scheme:

An abdominal wall fat extraction device comprises a sleeve, a traction sliding block, a sliding sleeve, a control block, a rack and a ratchet;

The inside of telescopic is formed with the cavity, pulls the slider setting in the inner chamber, and the sliding sleeve cover is established in telescopic outside to can follow the axial synchronous motion of cavity with the slider that pulls, the front end of slider is used for connecting the piston handle of syringe, and the control block is fixed in telescopic inner chamber, and the one end of rack is connected with the slider that pulls, and the other end of rack passes the control block and extends to telescopic terminal, and the ratchet setting is in the control block and is connected with eccentric mechanism, and eccentric mechanism is used for controlling the meshing state of ratchet and rack.

Preferably, the front end of the sleeve is provided with a syringe fixing part for fixing the syringe.

Preferably, a sliding groove is axially formed in the outer wall of the sleeve, a guide block is arranged on the traction sliding block and is positioned in the sliding groove, the sliding sleeve is fixedly connected with the traction sliding block through the guide block, and the width of the sliding groove is larger than that of the piston handle of the injector.

Preferably, the front end of the traction sliding block is provided with a fixing part for connecting with a piston handle of the syringe.

Preferably, the control block is provided with a spring hole along the radial direction, the ratchet is arranged in the spring hole, the lower end of the ratchet is meshed with the rack, and the upper end of the ratchet is provided with an elastic component.

Preferably, the eccentric mechanism comprises a control rod and an eccentric block arranged at one end of the control rod, a control groove is formed in the side wall of the ratchet, the eccentric block is arranged on one side of the center of the end part of the control rod, the eccentric block is located in the control groove, and the ratchet can move up and down along the spring hole when the eccentric block rotates.

Preferably, the control block is provided with a mounting hole, the mounting hole is communicated with the spring hole, one end of the control rod is positioned in the mounting hole, and the eccentric block penetrates through the mounting hole and stretches into the control groove.

Preferably, the end of the sleeve is provided with an end cover, and the end of the control rod extends out of the sleeve through the end cover and is connected with a handle.

Preferably, a groove is formed in the outer side of the end cover, and a first positioning groove and a second positioning groove matched with the handle are formed in the side wall of the groove.

Preferably, the control block is provided with a positioning pin, and the control rod is provided with an annular positioning groove matched with the positioning pin.

Compared with the prior art, the invention has the following beneficial technical effects:

The utility model provides an abdominal wall fat extraction device, which comprises a sleeve, a traction slide block, a slide sleeve and an eccentric mechanism, wherein the traction slide block and the slide sleeve are respectively arranged in and outside the sleeve, the traction slide block is connected with a ratchet through a rack and forms a rack type ratchet mechanism, the eccentric mechanism is connected with the ratchet, the meshing state of the ratchet and the rack is controlled through the eccentric mechanism, when the abdominal wall fat extraction device is used, a piston handle of a syringe is connected with the traction slide block, the traction slide block and the rack are driven to synchronously move through the slide sleeve, and the ratchet and the rack are meshed to realize the real-time positioning of the piston handle of the syringe, so that different negative pressure suction forces are formed in the syringe, the extraction of fat particles is realized, the problem that medical staff is required to continuously apply tension to the syringe and keep stable in the past is solved, the device realizes the fine adjustment of the negative pressure in the syringe through the rack type ratchet mechanism, the extraction efficiency of fat tissues is improved, and the operation difficulty is reduced.

Drawings

FIG. 1 is a schematic diagram of an abdominal fat extraction device according to the present utility model;

FIG. 2 is an exploded view of the abdominal fat extraction device of the present utility model;

FIG. 3 is an axial cross-sectional view of the abdominal fat extraction device of the present utility model;

FIG. 4 is a schematic view of the installation of the sliding sleeve and ratchet mechanism of the present utility model;

FIG. 5 is a schematic view of the structure of the ratchet mechanism and the present utility model;

FIG. 6 is a schematic diagram of a control block of the present utility model;

FIG. 7 is a schematic diagram of a control block of the present utility model;

FIG. 8 is a schematic diagram of the connection of the slider and the rack of the present utility model;

FIG. 9 is a view showing the state of use of the abdominal fat extracting device of the present utility model;

In the figure: 1. a needle cylinder fixing part; 2. traction slide; 3. a sliding sleeve; 4. a rack; 5. a sleeve; 6. an end cap; 7. a control block; 8. a ratchet; 9. an eccentric block; 10. a control lever; 11. a handle; 12. a spring hole; 13. a guide block; 14. a positioning groove; 15. a fixing groove; 16. a needle cylinder fixing groove; 17. a chute; 22. a clamping groove; 61. a first positioning groove; 62. a second positioning groove; 71. a pin hole; 72. a mounting hole; 73. a rack hole; 81. and a control groove.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings, which illustrate but do not limit the utility model.

Referring to fig. 1-9, an abdominal fat extraction device comprises a sleeve 5, a traction slide 2, a sliding sleeve 3 and a control block 7, a rack 4 and a ratchet 8.

The inside of sleeve 5 is formed with the cavity, pulls slider 2 setting in the inner chamber, and the sliding sleeve 3 cover is established in telescopic outside to can with pull slider 2 along the axial synchronous motion of cavity, pull slider 2's front end is used for connecting the piston handle of syringe, control block 7 is fixed in telescopic cavity, and the one end of rack 4 is connected with pull slider 2, and the other end of rack 4 passes the control block and extends to the terminal of sleeve 5, and ratchet 8 sets up in the control block and is connected with eccentric mechanism, and eccentric mechanism is used for controlling the meshing state of ratchet and rack.

The sleeve is a hollow circular tube, a needle cylinder fixing part 1 for fixing a syringe needle cylinder is arranged at the front end of the sleeve, a fixing groove 15 is arranged between the needle cylinder fixing part and the end face of the sleeve, the fixing groove 15 is a U-shaped clamping groove, the opening end of the U-shaped clamping groove is positioned on the side wall of the sleeve, the width of the U-shaped clamping groove is identical to that of a needle cylinder finger plate, the needle cylinder fixing part 1 is axially provided with a needle cylinder fixing groove 16 along the axial direction of the needle cylinder fixing part, the needle cylinder is arranged in the needle cylinder fixing groove in a matched mode, meanwhile the needle cylinder finger plate is clamped in the fixing groove 15, fixing of the needle cylinder is achieved, the piston of the syringe is connected with a traction sliding block 2, and therefore when the traction sliding block 2 drives a piston rod to move, the needle cylinder is prevented from moving.

The outer wall of the sleeve is symmetrically provided with sliding grooves 17 along the axis, the sliding grooves on the upper side penetrate through the end part of the sleeve, one end of the sliding grooves are opened on the sleeve, the width of each sliding groove is larger than that of a piston handle of the syringe, when the sliding sleeve is used, the piston of the syringe is placed into the sleeve from the sliding grooves and is connected with the traction sliding block 2, the sliding grooves on the bottom of the sleeve are used for guiding the traction sliding block 2, and the sliding sleeve is sleeved outside the sleeve and is fixedly connected with the guide block through a positioning screw.

In another embodiment, the side wall of the chute is provided with a syringe clamping groove 18, and the syringe clamping groove is located at the front end of the chute, and the width of the chute is larger than that of the syringe, in this embodiment, the syringe fixing portion 1 may be omitted, the syringe may be placed into the sleeve along the chute, and the finger pressing plate of the syringe is clamped with the syringe clamping groove 18, so that the positioning of the syringe may be achieved.

Referring to fig. 8, the top and bottom of the traction slide 2 are provided with guide blocks 13, which are located in the sliding groove to circumferentially position the traction slide 2, so as to avoid circumferential rotation of the traction slide 2, the traction slide 2 is provided with a rack hole, one end of the rack is installed in the rack hole and fixed by a positioning pin, the other end of the rack extends towards the tail end of the sleeve 3, and the traction slide 2 drives the rack to synchronously move when moving.

The front end of the traction slide block 2 is provided with a fixing part for connecting a piston handle of the injector, the fixing part is a U-shaped clamping groove 22 arranged on the traction slide block 2, the opening end of the clamping groove 22 is positioned at the top of the traction slide block 2, and the piston handle is clamped in the clamping groove, so that the connection between the traction slide block 2 and the piston handle is realized.

Referring to fig. 4-7, the control block 7 is in a cylindrical structure, is fixed in the cavity of the sleeve and is positioned at one end of the traction slide block 2 far away from the injector, a rack hole 73 is formed in the control block 7, when the traction slide block 2 moves, the rack slides in the rack hole, a spring hole is formed in the control block 7, a ratchet is arranged in the spring hole, a spring is arranged at the top of the ratchet, and the ratchet 8 is kept engaged with the rack under the action of the spring, so that the position of the piston rod of the injector is controlled by a ratchet mechanism formed by the ratchet and the rack, and the injector is kept in a required negative pressure state in the process of extracting adipose tissues.

Referring to fig. 7, the eccentric mechanism includes a control rod 10 and an eccentric block disposed at one end of the control rod 10, the other end of the control rod 10 is located outside the sleeve, a control groove 81 is disposed on a side wall of the ratchet 8, the eccentric block 9 is located in the control groove, the eccentric block 9 is disposed on one side of a center of a circle at an end of the control rod 10 to form an eccentric structure, the eccentric block 9 is of a rectangular structure, a width of the eccentric block is smaller than a height of the control groove, when the ratchet is meshed with the rack, the width direction of the eccentric block 9 is horizontal, when the ratchet is required to be separated from the rack, the control rod is rotated to enable the eccentric block to rotate 90 degrees, the width direction of the control block is vertical, at this time, the side wall of the width direction of the eccentric block is abutted to the top of the control groove, the ratchet is pushed upwards to be at a certain height, meanwhile, the spring is in a compressed state, at this time, the ratchet is separated from the rack, and a piston of the injector can move towards a needle.

In this embodiment, the rack is provided with a plurality of continuous unidirectional teeth and cooperates with the ratchet teeth to form a ratchet mechanism which, when engaged with the rack, causes the rack to move only in a single phase, i.e. in the direction of aspiration of the syringe plunger rod.

Referring to fig. 4-5, the control rod is coaxially arranged with the sleeve and is located at the top of the rack, a mounting hole 72 is formed in the control block, the mounting hole 72 is communicated with the spring hole, the axis of the mounting hole 72 is perpendicular to the axis of the spring hole, the end of the control rod is located in the mounting hole 72, the eccentric block 9 penetrates through the mounting hole 72 to extend into the control groove 81, the end of the sleeve is provided with an end cover 6, the other end of the control rod penetrates through the end cover to extend out of the sleeve and is connected with a handle 11, a groove is formed in the outer side of the end cover, a first positioning groove 61 and a second positioning groove 62 are formed in the side wall of the groove, the control rod is rotated through the handle 11, when the end of the handle 11 abuts against the first positioning groove 61, the ratchet is meshed with the rack, and when the end of the handle 11 abuts against the second positioning groove 62, the ratchet is separated from the rack.

The control block is also provided with a pin hole 71, the control rod is provided with a positioning groove 14, the positioning groove is an annular groove, the pin hole 71 and the positioning groove are positioned on the same surface, the end part of the pin penetrates through the pin hole and stretches into the positioning groove to axially position the control rod, and the control rod is axially positioned under the condition of rotation through the cooperation of the annular groove and the pin.

Referring to fig. 9, the following describes in detail a method for using an abdominal wall fat extraction device according to the present utility model, including the following steps:

step 1, rotating a handle to enable the end part of the handle to be located in a second positioning groove, separating a rack from a ratchet at the moment, and enabling a traction sliding block and the rack to be in a free state;

Step 2, a piston rod of a clinically used 10-20ml syringe is completely inserted into a syringe, the position of a traction sliding block is adjusted, then the syringe of the syringe is placed in a syringe fixing groove, a syringe finger pressure plate is clamped into the fixing groove 15, and meanwhile, a piston handle of the syringe is connected with a clamping groove 22 at the end part of the traction sliding block 2.

Step 3, rotating the handle to enable the end part of the handle to be located in the first positioning groove, and meshing the rack with the ratchet teeth at the moment;

And 4, under the local anesthesia state, inserting a needle head of the injector into the fat of the inner abdominal wall, controlling the injector by one hand, tightly holding the sliding sleeve by the other hand and moving towards the tail end of the sleeve, driving the rack to synchronously move by the sliding block in the moving process, jacking up the ratchet teeth by each tooth in the moving process and compressing the spring by the rack, and positioning the rack by matching the rack with the ratchet teeth due to the unidirectional teeth on the rack, wherein different positions of the rack are positioned with the ratchet teeth, so that different negative pressure for extracting fat particles is generated in the syringe.

According to the required negative pressure, the rack is moved to a corresponding position through the sliding sleeve to be matched with the ratchet to form positioning, so that the syringe is kept in a vacuum state, the needle head is moved back and forth in all directions into subcutaneous fat, the maximum sampling is realized by changing the direction of the moving stroke of the needle head, the direction of the needle head is maintained tangential to serosa and parallel to the surface of skin, the peritoneal cavity is prevented from being pierced, adipose tissue is accumulated in the syringe, and enough adipose tissue is extracted.

And 5, rotating the handle to enable the end part of the handle to be located in a second positioning groove, separating the rack from the ratchet, pulling the sliding block and the rack to be in a free state, moving the sliding sleeve towards the direction of the needle under the action of negative pressure, releasing the vacuum of the syringe, taking out the needle, separating the syringe from the abdominal wall fat extraction device, and completing the sampling of adipose tissue.

The above is only for illustrating the technical idea of the present utility model, and the protection scope of the present utility model is not limited by this, and any modification made on the basis of the technical scheme according to the technical idea of the present utility model falls within the protection scope of the claims of the present utility model.

Claims

1. The abdominal wall fat extraction device is characterized by comprising a sleeve (5), a traction sliding block (2), a sliding sleeve (3) and a control block (7), a rack (4) and a ratchet (8);

The inside of sleeve (5) is formed with the cavity, pull slider (2) setting in the inner chamber, sliding sleeve (3) cover is established in telescopic outside to can with pull slider (2) along the axial synchronous motion of cavity, the front end of pull slider (2) is used for connecting the piston handle of syringe, control block (7) are fixed in telescopic inner chamber, the one end of rack (4) is connected with pull slider (2), the other end of rack (4) passes the control block and extends to the terminal of sleeve (5), ratchet (8) set up in the control block and be connected with eccentric mechanism, eccentric mechanism is used for controlling the meshing state of ratchet and rack.

2. An abdominal wall fat extraction device according to claim 1, characterized in that the front end of the sleeve is provided with a syringe fixing section (1) for fixing the syringe.

3. The abdominal wall fat extraction device according to claim 1, characterized in that the outer wall of the sleeve (5) is provided with a chute along the axial direction thereof, the traction slide (2) is provided with a guide block and is positioned in the chute, the sliding sleeve is fixedly connected with the traction slide (2) through the guide block, and the width of the chute is larger than that of the piston handle of the injector.

4. An abdominal wall fat extraction device according to claim 1, characterized in that the front end of the traction slide (2) is provided with a fixing part for connecting to the syringe piston handle.

5. An abdominal wall fat extraction device according to claim 1, characterized in that the control block (7) is provided with a spring hole in a radial direction, a ratchet is provided in the spring hole, a lower end of the ratchet is engaged with the rack, and an upper end of the ratchet is provided with an elastic member.

6. The abdominal fat extraction device according to claim 5, wherein the eccentric mechanism comprises a control rod (10) and an eccentric block arranged at one end of the control rod, a control groove (81) is arranged on the side wall of the ratchet (8), the eccentric block (9) is arranged on one side of the center of the end part of the control rod (10), the eccentric block (9) is positioned in the control groove (81), and the ratchet (8) can move up and down along the spring hole when the eccentric block (9) rotates.

7. The abdominal fat extraction device according to claim 6, wherein the control block is provided with a mounting hole (72), the mounting hole (72) is communicated with the spring hole, one end of the control rod is positioned in the mounting hole (72), and the eccentric block (9) penetrates through the mounting hole (72) and stretches into the control groove (81).

8. An abdominal fat extraction device according to claim 6, characterized in that the end of the sleeve is provided with an end cap (6) through which the end of the control rod protrudes outside the sleeve and is connected with a handle (11).

9. The abdominal wall fat extraction device according to claim 8, wherein the outer side of the end cap is provided with a groove, and the side wall of the groove is provided with a first positioning groove (61) and a second positioning groove (62) which are matched with the handle.

10. The abdominal wall fat extraction device according to claim 6, wherein the control block is provided with a positioning pin, and the control lever is provided with an annular positioning groove (14) which is matched with the positioning pin.