CN219439347U

CN219439347U - Puncture device with knife

Info

Publication number: CN219439347U
Application number: CN202222077494.6U
Authority: CN
Inventors: 俞飞; 陆陪冲
Original assignee: Changzhou Tongchuang Medical Instrument Technology Co ltd
Current assignee: Changzhou Tongchuang Medical Instrument Technology Co ltd
Priority date: 2022-08-09
Filing date: 2022-08-09
Publication date: 2023-08-01
Anticipated expiration: 2032-08-09

Abstract

The utility model relates to a puncturing device with a knife, which is provided with a protection seat, a puncturing rod, a puncturing cone and a puncturing knife; the puncture rod is internally provided with a cutter bar, one end of the puncture rod is connected with the protection seat, and the other end of the puncture rod is connected with the puncture cone; the puncture knife is connected with the lower end of the cutter bar; the upper end of the cutter bar is connected with the protection seat through the cutter seat; the protection seat is provided with a safety button; the upper end of the puncture rod is provided with a clamping piece, and a reset spring is arranged between the upper end surface and the protection seat; when the safety button is in a pressed state, the puncture rod can axially move; and when the safety button is in a release state and the puncture rod is in a non-compression state, the guide limit rod on the puncture rod is abutted against the safety button. The utility model can ensure good sharpness in clinical operation, effectively protect the puncture knife after the puncture is completed, avoid stabbing human viscera tissues, reduce operation difficulty, achieve minimally invasive operation effects expected by doctors and patients, and ensure life health and safety of patients.

Description

Puncture device with knife

Technical Field

The utility model belongs to the technical field of medical equipment, relates to medical equipment for surgical operation, and in particular relates to a puncture device with a knife.

Background

In minimally invasive human medical surgery, once a disease is found in a human body, surgery or excision is needed, in the surgery process, a puncture outfit is firstly needed to be applied, and the puncture outfit is a surgical instrument which punctures the abdominal wall and enters a body cavity channel for other surgical instruments, and belongs to a minimally invasive surgical instrument.

However, the traditional puncture outfit has some defects in the use process, such as complex structure and low stability, and after the puncture knife passes through the abdominal wall, the puncture knife can be triggered twice due to the exposed blade, so that the damage to human organs is easy to cause, the safety of the operation is greatly reduced, if the condition of puncturing the viscera of the human body occurs, the abdominal opening operation is also required, the operation difficulty of doctors is increased, the minimally invasive operation requirements of doctors and patients are not met, the doctor-patient contradiction is greatly increased, and the life danger of the patients is also greatly increased.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide the puncture device with the knife, which can ensure good sharpness in clinical operations and effectively protect the puncture knife after the puncture is completed.

The technical scheme for realizing the aim of the utility model is as follows: a puncturing device with knife is provided with a protection seat, a puncturing rod, a puncturing cone and a puncturing knife; the puncture rod is internally provided with a cutter bar, one end of the puncture rod is connected with the protection seat in a sliding way, and the other end of the puncture rod is connected with the puncture cone; the puncture knife is connected with the lower end of the cutter bar; the upper end of the cutter bar is connected with the protection seat through the cutter seat; the protection seat is provided with a safety button; the upper end of the puncture rod is provided with a clamping piece, and a reset spring is arranged between the upper end surface and the protection seat; when the safety button is in a pressed state, the puncture rod can axially move relative to the cutter rod; and when the safety button is in a release state and the puncture rod is in a non-compression state, the guide limit rod on the puncture rod is abutted against the safety button.

According to the technical scheme, the safety button is provided with the clasp matched with the buckle piece at the inner position of the protection seat; a guide limiting rod is arranged on the puncture rod at a position corresponding to the lower end surface of the hook buckle; the upper end of the guide limiting rod is propped against the bulge contacted with the buckle part on the hook buckle in the release state, the upper end of the guide limiting rod corresponds to the avoidance groove formed between the hook buckle and the buckle part in the hooking state, and the axial displacement distance of the buckle part along the cutter bar is greater than the axial thickness of the hook buckle.

According to the technical scheme, the safety spring is arranged between the safety button and the buckle piece.

According to the technical scheme, projections of opposite surfaces of the hook buckle and the buckle piece in the moving direction of the hook buckle are overlapped, and the opposite surfaces are inclined surfaces.

According to the technical scheme, the cutter holder is provided with the limiting plate; the lower end face of the limiting plate is contacted with the upper end face of the safety button.

According to the technical scheme, the pressing displacement distance of the clasp is larger than the distance between the bulge along the movement direction of the clasp and the contact surface of the guide limiting rod.

According to the technical scheme, the puncture cone comprises an upper cone and a lower cone; the upper cone is connected with the lower end of the puncture rod; the tip of the lower cone is provided with a notch for exposing the puncture knife, and the other end of the lower cone is provided with a buckle; the buckle is matched with the clamping hole on the upper cone.

After the technical scheme is adopted, the utility model has the following positive effects: can ensure good sharpness in clinical operation, simultaneously effectively protect the puncture knife after the puncture is finished, avoid stabbing human viscera tissues, reduce operation difficulty, achieve minimally invasive operation effects expected by doctors and patients, and ensure life health and safety of the patients.

Drawings

In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, in which

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a front view of the present utility model;

FIG. 3 is a cross-sectional view in the direction B-B of FIG. 2;

FIG. 4 is a schematic illustration of the present utility model between a safety button and a lancing lever;

fig. 5 is a partial enlarged view of fig. 4.

The reference numerals in the drawings are: 1. a protection seat; 2. a puncture rod; 3. a puncture cone; 31. an upper cone; 32. a lower cone; 4. a piercing knife; 5. an insurance button; 6. a clip; 7. a clasp; 71. the clasp is convex; 72. an avoidance groove; 8. a guide limit rod; 9. a return spring; 10. a cutter bar; 11. a safety spring; 12. a tool apron; 13. a limiting plate; 14. and (5) a buckle.

Detailed Description

Example 1

The utility model relates to a driving puncture device, which is provided with a protection seat 1, a puncture rod 2, a puncture cone 3 and a puncture knife 4; a cutter bar 10 is arranged in the puncture rod 2, one end of the puncture rod 2 is connected with the protection seat 1, and the other end is connected with the puncture cone 3; the puncture knife 4 is connected with the lower end of the knife bar 10; the upper end of the cutter bar 10 is connected with the protection seat 1 through a cutter seat 12; the protection seat 1 is provided with a safety button 5; the upper end of the puncture rod 2 is provided with a clamping piece 6, and a reset spring 9 is arranged between the upper end surface and the protection seat 1; when the safety button 5 is pressed, the puncture rod 2 can axially move relative to the cutter bar 10, namely after the safety button 5 is pressed, resistance is generated when the puncture cone 3 contacts skin or an obstacle, the puncture cone 3 stops moving under the action of the resistance, the protection seat 1 continues moving relative to the puncture cone 3 under the action of external force, and the puncture knife 4 is driven to continue moving relative to the puncture cone 3 by the cutter bar 10, so that the puncture knife 4 is exposed from the puncture cone 3; when the safety button 5 is in a release state and the puncture rod 2 is in a non-compression state, the guide limit rod 8 on the puncture rod 2 is propped against the safety button 5, so that the positions of the protection seat 1, the puncture knife 4, the puncture rod 2 and the puncture cone 3 are relatively fixed through the knife rod 10, the puncture knife 4 is locked in the puncture cone 3, secondary firing of the puncture knife 4 can not be caused, damage to human organs is avoided, and the safety of an operation is greatly improved.

Example 2

Referring to fig. 1 to 5, this embodiment is based on embodiment 1, specifically: the safety button 5 is positioned in the protection seat 1 and provided with a clasp 7 matched with the buckle piece 6; a guiding and limiting rod 8 is arranged on the puncture rod 2 at a position corresponding to the lower end surface of the clasp 7; the upper end of the guide limiting rod 8 is propped against the clasp protrusion 71 contacted with the clasp 6 on the clasp 7 in the release state, the upper end of the guide limiting rod 8 corresponds to an avoidance groove formed between the clasp 7 and the clasp 6 in the clasp state, and the axial displacement distance of the clasp 6 along the cutter bar 10 is greater than the axial thickness of the clasp 7 along the cutter bar 10.

In order to enable the safety button 5 to automatically reset after being pressed, a safety spring 11 is arranged between the safety button 5 and the buckling piece 6, one end of the safety spring 11 is sleeved on a positioning column of the safety button 5 and fixed, and the other end of the safety spring is fixed on the end face of the buckling piece 6.

In order to achieve the effect of hooking, the projections of the opposite surfaces of the hook 7 and the buckle piece 6 along the movement direction of the hook 7 are overlapped, the opposite surfaces are inclined planes, the aim of overlapping is to hook the hook 7 and the buckle piece 6, the guide limiting rod 8 corresponds to the position of the avoidance groove 72 at the moment, the puncture knife 4 is exposed under the action of resistance when the puncture cone 3 contacts skin or an obstacle, the aim of the inclined planes of the opposite surfaces is to guide through the inclined planes, the hook 7 hooks the buckle piece 6 smoothly, and the position of the avoidance groove 72 corresponding to the guide limiting rod 8 is realized.

In order to stabilize the position of the safety button 5, a limiting plate 13 is arranged on the tool apron 12; the lower end surface of the limiting plate 13 contacts with the upper end surface of the safety button 5, so that the problem that the safety button 5 fails to hook the fastening piece 6 due to the fact that the safety button is pressed or self gravity shifts can be avoided.

The pressing displacement distance of the clasp 7 is larger than the distance between the clasp bulge 71 and the contact surface of the guide limit rod 8 along the movement direction of the clasp 7, so as to ensure that the guide limit rod 8 corresponds to the position of the avoidance groove 72; the puncture cone 3 can be designed as an upper cone 31 and a lower cone 32; the upper cone 31 is connected with the lower end of the puncture rod 2; the tip of the lower cone 32 is provided with a notch for exposing the puncture knife 4, and the other end is provided with a buckle 14.

The working principle of the utility model is as follows: when the puncture needle is used, the safety button 5 is pressed once, and the opposite surfaces of the hook 7 and the buckle piece 6 are guided by the inclined planes, so that the hook 7 and the buckle piece 6 are hooked and positioned, at the moment, the guide limiting rod 8 corresponds to the position of the avoidance groove 72, and the puncture needle 2 can be displaced relative to the hook 7; when the puncture cone 3 is pressed to the skin, the puncture cone 3 is blocked by the skin, the puncture cone 3 stops moving under the action of resistance, the protection seat 1 continues moving relative to the puncture cone 3 under the action of external force, and the puncture knife 4 is driven to continue moving relative to the puncture cone 3 through the knife bar 10, so that the puncture knife 4 is exposed from the puncture cone 3, the current puncture knife 4 can work normally, good sharpness is ensured when the skin is punctured, a doctor is ensured to puncture smoothly, when the puncture is completed, the puncture rod 2 can drive the puncture cone 3 to reset under the action of the reset spring 9 under the action of the reset spring, at the moment, the relative position of the puncture cone 3 and the puncture knife 4 is fixed, the puncture knife 4 is positioned in the puncture cone 3, and human viscera tissues are prevented from being punctured again. When the clinician needs to puncture again for use, the clinician only needs to press the safety button 5 again.

From the concrete structure, press the safety button 5 once, just push forward the button 7 once, and the result of push is that two hooks of button 7 front end hook the preceding terminal surface of button 6, and the guide limit lever 8 of puncture pole 2 is relative with dodging groove 72 position this moment, produce resistance when the puncture awl 3 contacts the skin, puncture awl 3 stops the displacement under the effect of resistance, and protection seat 1 continues the displacement under the exogenic action relative puncture awl 3, and drive puncture sword 4 through cutter arbor 10 and continue the displacement relative puncture awl 3, namely the guide limit lever 8 of puncture pole 2 gets into dodging groove 72 of button 7, drive the displacement of button 6 simultaneously, puncture pole 2 links to each other with puncture awl 3, button 7 links to each other through cutter arbor 10 and puncture sword 4, thereby make puncture sword 4 expose from puncture awl 3, when accomplishing the puncture work, the guide limit lever 8 of puncture pole 2 gets into the thickness of button 7 dodge groove 72 displacement distance exceeds button 7, the thickness of button 7 also exceeds the displacement distance of button 7 under the exogenic action, and protection seat 1 is in the same way, and the front end face of button 7 is broken away from button 6 and is pulled back under the effect of hook 7 under the back-off spring 7, no restoring effect of button 8, no restoring the button 8 is applied to the button 7, no restoring the effect of button 1, the back end face is realized under the effect of button 7, the back-stop tool is realized, the button is not has been pulled under the button 7, and has the restoring effect on the button 7, and has been pulled back-off the button 7, and has been pulled on the effect on the button 7, and has been pulled back end.

While the foregoing is directed to embodiments of the present utility model, other and further details of the utility model may be had by the present utility model, it should be understood that the foregoing description is merely illustrative of the present utility model and that no limitations are intended to the scope of the utility model, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the utility model.

Claims

1. A puncturing device with knife is provided with a protection seat (1), a puncturing rod (2), a puncturing cone (3) and a puncturing knife (4); a cutter bar (10) is arranged in the puncture rod (2), one end of the puncture rod (2) is connected with the protection seat (1) in a sliding way, and the other end of the puncture rod is connected with the puncture cone (3); the puncture knife (4) is connected with the lower end of the knife bar (10); the upper end of the cutter bar (10) is connected with the protection seat (1) through the cutter seat (12); the method is characterized in that: the protection seat (1) is provided with a safety button (5); the upper end of the puncture rod (2) is provided with a clamping piece (6), and a return spring (9) is arranged between the upper end surface and the protection seat (1); when the safety button (5) is in a pressed state, the puncture rod (2) can axially move relative to the cutter bar (10); when the safety button (5) is in a release state and the puncture rod (2) is in a non-compression state, the guide limit rod (8) on the puncture rod (2) is abutted against the safety button (5).

2. The bladed lancing device according to claim 1, wherein: the safety button (5) is positioned in the protection seat (1) and provided with a clasp (7) matched with the buckle piece (6); a guide limit rod (8) is arranged on the puncture rod (2) at the position corresponding to the lower end surface of the clasp (7); the upper end of the guide limiting rod (8) is propped against the bulge contacted with the buckle piece (6) on the buckle (7) in the release state, the upper end of the guide limiting rod (8) corresponds to an avoidance groove formed between the buckle piece (6) and the buckle piece (7) in the hooking state, and the axial displacement distance of the buckle piece (6) along the cutter bar (10) is greater than the axial thickness of the buckle piece (7) along the cutter bar (10).

3. The bladed lancing device according to claim 1 or 2, wherein: and a safety spring (11) is arranged between the safety button (5) and the buckle piece (6).

4. The bladed lancing device according to claim 2, wherein: the projections of the opposite surfaces of the clasp (7) and the buckle piece (6) along the movement direction of the clasp (7) are overlapped, and the opposite surfaces are inclined surfaces.

5. A lancing device according to claim 3, wherein: a limiting plate (13) is arranged on the tool apron (12); the lower end face of the limiting plate (13) is contacted with the upper end face of the safety button (5).

6. The bladed lancing device according to claim 2, wherein: the pressing displacement distance of the clasp (7) is larger than the distance between the bulge along the movement direction of the clasp (7) and the contact surface of the guide limit rod (8).

7. The bladed lancing device according to claim 1 or 2, wherein: the puncture cone (3) comprises an upper cone (31) and a lower cone (32); the upper cone (31) is connected with the lower end of the puncture rod (2); the tip of the lower cone (32) is provided with a notch for exposing the puncture knife (4), and the other end of the lower cone is provided with a buckle (14); the buckle (14) is matched with a clamping hole on the upper cone (31).