Puncture structure for articular cavity

Abstract

The puncture structure for the articular cavity comprises a puncture body, an air bag and a connecting boss are arranged on the outer side wall of the puncture body, and an air inlet connector is arranged on one end face of the connecting boss. A cavity is formed in the connecting boss, a first air hole and a second air hole are formed in the inner wall of the cavity, the first air hole communicates with an inner cavity of the puncture body, and the second air hole communicates with the air bag. A scavenging valve element is movably connected into the cavity, and the scavenging valve element is moved to block the first air hole or the second air hole. When the scavenging valve element blocks the first air hole, air enters the air bag through the second air hole, and the air bag is inflated to be expanded for positioning; when the scavenging valve element blocks the second air hole, air enters the inner cavity of the puncture body through the first air hole, and air is provided for an articular cavity; according to the puncture structure, the airflow path can be controlled through simple movement of the valve element, switching of different functions is completed, the complexity of equipment is reduced, and the convenience and safety of an operation are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical technology field especially, a kind of puncture structure for joint cavity. BACKGROUND

[0002] Puncture equipment of air bag type positioning is widely used in minimally invasive surgery, especially in joint cavity puncture and laparoscopic surgery, which provides necessary operation space for surgeons by establishing joint cavity environment in the body. The core function of this equipment is to achieve stable positioning in the body through the inflation of air bag, to avoid unnecessary harm to patients due to puncture position deviation. With the rapid development of minimally invasive surgery technology, air bag type puncture equipment gradually becomes one of the standard tools of modern surgery. The demand for this equipment in the medical industry is also increasing, especially in improving surgical accuracy, reducing patient pain and shortening recovery time, air bag positioning technology plays a key role.

[0003] The existing air bag type positioning puncture equipment is usually designed with two independent gas inlets, respectively for filling carbon dioxide gas into the joint cavity and inflating the air bag. Although this design can effectively complete the gas supply and positioning function required for surgery, it also has certain disadvantages. First, the two gas inlets increase the operation complexity of the equipment, and the doctor needs to separately control the control units of the two gas inlet equipment to switch the gas supply path during operation, which leads to an increase in operation steps and is prone to operation errors or equipment failure. Secondly, the complex structure of the equipment leads to high manufacturing cost, and the equipment is large in size, which is not conducive to the requirements of miniaturization and easy operation of instruments in minimally invasive surgery.

[0004] Therefore, it is necessary to improve the existing puncture equipment to solve the technical problem of needing to operate the control units of two gas inlet equipment and the operation complexity. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of puncture structure for joint cavity, to solve above technical problem.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A kind of puncture structure for joint cavity, including puncture body, the outer side wall of the puncture body is provided with air bag and connecting boss, the end face of the connecting boss is provided with gas inlet interface;

[0008] The connecting boss is provided with chamber, the inner wall of the chamber is provided with first gas hole and second gas hole, the first gas hole is communicated with the inner cavity of the puncture body, and the second gas hole is communicated with the air bag;

[0009] The chamber is movably connected with a ventilation valve core, and the ventilation valve core is moved to block the first air hole or the second air hole.

[0010] Optionally, the ventilation valve core comprises a main rod, and two ends of the main rod are respectively provided with a pressing part for pressing the ventilation valve core to move, and the pressing part protrudes from the connecting boss;

[0011] The main rod is provided with a first blocking ring and a second blocking ring at intervals, and the interval of the first blocking ring and the second blocking ring is smaller than the interval of the first air hole and the second air hole.

[0012] Optionally, the inner wall of the chamber is provided with a first inner groove and a second inner groove at intervals, the first air hole is arranged on the inner side wall of the first inner groove, and the second air hole is arranged on the inner side wall of the second inner groove.

[0013] The interval of the first inner groove and the second inner groove is equal to the interval of the middle lines of the first blocking ring and the second blocking ring.

[0014] Optionally, a one-way valve is arranged on the path of the second air hole, the one-way valve is provided with a valve key, the lower end surface of the connecting boss is provided with a mounting groove, the valve key is accommodated in the mounting groove, the valve key is pressed to make the one-way valve in an open state.

[0015] Optionally, the one-way valve comprises a valve seat, a valve core and a return spring; the valve seat is arranged on the path of the second air hole, a valve cavity is formed in the valve seat, the valve core is movably arranged in the valve cavity and can move in the airflow direction in the valve cavity;

[0016] One end of the return spring is connected to the valve core, and the other end is fixed to the valve seat, so as to push the valve core to one end of the valve seat to achieve a closed state; the valve key is connected with the valve core, and the valve core is pushed to an open state by pressing the valve key.

[0017] Optionally, the puncture body comprises an outer puncture body and an inner puncture body, a gap part is arranged between the outer puncture body and the inner puncture body, one end of the gap part is communicated with the second air hole, and the other end is connected with the air bag.

[0018] The inner puncture body is provided with an inner cavity, and one end of the first air hole is communicated with the inner cavity.

[0019] Optionally, one end of the inner puncture body is provided with a first annular groove and a second annular groove at intervals, and a sealing ring is arranged in each of the first annular groove and the second annular groove.

[0020] A third groove is arranged between the first and second annular grooves, the third groove is communicated with the first gas hole, and a gas permeable hole communicated with the inner cavity is arranged on the inner wall of the third groove.

[0021] Optionally, a positioning ring is arranged at a preset position of the outer sidewall of the puncture body, the positioning ring is arranged above the air bag, and a positioning gap is formed between the positioning ring and the air bag.

[0022] Optionally, an adjusting assembly is arranged between the positioning ring and the puncture body, the adjusting assembly comprises a damping ring and a tightness assembly.

[0023] The damping ring is sleeved on the outer sidewall of the puncture body, the tightness assembly is connected with the damping ring, and the tightness assembly is used for changing the tightness state of the damping ring sleeve.

[0024] Compared with the prior art, the puncture structure has the following beneficial effects: the gas inlet is connected to the chamber of the puncture structure, the first gas hole and the second gas hole are arranged in the chamber and are communicated with the inner cavity of the puncture body and the air bag respectively, the air exchange valve core in the chamber can be switched between the first gas hole and the second gas hole, when the air exchange valve core blocks the first gas hole, the gas enters the air bag through the second gas hole, inflation makes the air bag expand for positioning, when the air exchange valve core blocks the second gas hole, the gas enters the inner cavity of the puncture body through the first gas hole to provide gas for the joint cavity, the puncture structure can control the airflow path by simple valve core movement to complete the switching of different functions, not only reduces the complexity of the equipment and reduces the risk of misoperation in operation, but also effectively reduces the volume of the equipment and improves the convenience and safety of the operation. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0026] The structures, proportions, sizes, etc. shown in the drawings of the present specification are only used to cooperate with the content disclosed in the specification, to enable those skilled in the art to understand and read, and are not used to limit the limiting conditions of the embodiments of the present application, so they do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effect and purpose that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0027] Figure 1Fig. 1 is a schematic diagram of the overall structure of the puncture structure of the present embodiment;

[0028] Figure 2 Fig. 2 is a schematic diagram of the overall cross-sectional structure of the puncture structure of the present embodiment;

[0029] Figure 3 Fig. 3 is a schematic diagram of the exploded structure of the puncture body and the connecting boss of the puncture structure of the present embodiment;

[0030] Figure 4 Fig. 4 is a schematic diagram of the front view structure of the upper half of the puncture body of the puncture structure of the present embodiment;

[0031] Figure 5 Fig. 5 is a schematic diagram of the structure of the air exchange valve core of the puncture structure of the present embodiment;

[0032] Figure 6 Fig. 6 is a schematic diagram of the cross-sectional structure of the upper half of the puncture structure of the present embodiment;

[0033] Figure 7 Fig. 7 is a schematic diagram of the structure of the upper half of the inner puncture body of the puncture structure of the present embodiment.

[0034] Illustration: puncture body 1, air bag 2, connecting boss 3, air inlet interface 4, cavity 5, first air hole 6, second air hole 7, air exchange valve core 8, main body rod 9, pressing part 10, first blocking ring 11, second blocking ring 12, first inner groove 13, second inner groove 14, one-way valve 15, valve button 16, valve seat 17, valve core 18, return spring 19, outer puncture body 20, inner puncture body 21, gap part 22, first annular groove 23, second annular groove 24, sealing ring 25, third groove 26, positioning ring 27, adjusting assembly 28, air permeable hole 29. DETAILED DESCRIPTION

[0035] In order to make the utility model purposes, features, advantages of the present utility model more obvious and easy to understand, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in combination with the drawings in the embodiments of the present utility model. Obviously, the embodiments described below are only part of the embodiments of the present utility model, not all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present utility model.

[0036] In the description of the present invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally located component.

[0037] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0038] Combine Figures 1 to 7 As shown, an embodiment of the utility model provides a puncture structure for a joint cavity, comprising a puncture body 1, the outer wall of the puncture body 1 is provided with an air bag 2 and a connecting boss 3, and one end face of the connecting boss 3 is provided with an air inlet interface 4; a chamber 5 is provided in the connecting boss 3, and the inner wall of the chamber 5 is provided with a first air hole 6 and a second air hole 7, the first air hole 6 is connected to the inner cavity of the puncture body 1, and the second air hole 7 is connected to the air bag 2; wherein, a ventilation valve core 8 is movably connected in the chamber 5, and the ventilation valve core 8 is moved to block the first air hole 6 or the second air hole 7.

[0039] The working principle of the present invention is as follows: the air inlet interface 4 of the puncture structure is connected to the chamber 5 of the puncture structure, and a first air hole 6 and a second air hole 7 are provided in the chamber 5, which are respectively connected to the inner cavity of the puncture body 1 and the air bag 2. The ventilation valve core 8 in the chamber 5 can switch between the first air hole 6 and the second air hole 7. When the ventilation valve core 8 blocks the first air hole 6, the gas will enter the air bag 2 through the second air hole 7, and the air bag 2 will be inflated for positioning; when the ventilation valve core 8 blocks the second air hole 7, the gas will enter the inner cavity of the puncture body 1 through the first air hole 6 to provide gas for the joint cavity; the present puncture structure can control the airflow path by simply moving the valve core 18 to complete the switching of different functions, which not only reduces the complexity of the equipment and reduces the risk of misoperation during operation, but also effectively reduces the volume of the equipment and improves the convenience and safety of the operation.

[0040] In this embodiment, it is specifically described that the ventilation valve core 8 includes a main rod 9, and both ends of the main rod 9 are respectively provided with a pressing part 10 for pressing the ventilation valve core 8 to move, and the pressing part 10 protrudes from the connecting boss 3; the main rod 9 is provided with a first blocking ring 11 and a second blocking ring 12 at intervals, and the distance between the first blocking ring 11 and the second blocking ring 12 is smaller than the distance between the first air hole 6 and the second air hole 7.

[0041] When the air exchange valve core 8 moves, only one of the air holes can be connected to the air inlet port 4 at a time, while the other air hole is blocked. This design ensures that during the air path switching process, the gas can only enter the designated path, avoiding the situation where the gas is misdirected or enters two paths at the same time, ensuring the operating accuracy of the device and improving the safety of use.

[0042] In this embodiment, it is further explained that a first inner groove 13 and a second inner groove 14 are arranged at intervals on the inner wall of the chamber 5, the first air hole 6 is arranged on the inner side wall of the first inner groove 13, and the second air hole 7 is arranged on the inner side wall of the second inner groove 14; the distance D1 between the first inner groove 13 and the second inner groove 14 is equal to the centerline distance D2 between the first blocking ring 11 and the second blocking ring 12.

[0043] Combine Figure 4 As shown, the distance D1 between the first inner groove 13 and the second inner groove 14 is Figure 5 As shown, the center line distance D2 between the first blocking ring 11 and the second blocking ring 12 is shown.

[0044] When the air exchange valve core 8 moves, the blocking ring can effectively close the air holes that do not need to be inlet, thereby improving the airtightness of the entire device and preventing gas leakage. Through this structure, the equipment maintains stable sealing when switching the air path, which not only improves the safety factor of the equipment.

[0045] In this embodiment, a one-way valve 15 is provided on the path of the second air hole 7, and the one-way valve 15 is provided with a valve button 16. A mounting groove is provided on the lower end surface of the connecting boss 3, and the valve button 16 is received in the mounting groove. Pressing the valve button 16 puts the one-way valve 15 in an open state.

[0046] It should be noted that the design of the one-way valve 15 allows gas to enter the airbag 2 only through the second air hole 7 and prevent it from flowing out in the opposite direction, thus ensuring the inflation of the airbag 2. To facilitate operator control, the one-way valve 15 is equipped with a valve button 16, which is embedded in a mounting groove provided on the lower end surface of the connecting boss 3. When deflation is required, the operator presses the valve button 16, opening the one-way valve 15 and discharging the gas through the second air hole 7. This design not only ensures that the device maintains airtightness during normal operation but also provides a convenient means of controlling deflation, improving the device's ease of operation and reliability.

[0047] In this embodiment, it is specifically described that the one-way valve 15 includes a valve seat 17, a valve core 18 and a return spring 19; the valve seat 17 is arranged on the path of the second air hole 7, and a valve cavity is formed inside the valve seat 17. The valve core 18 can be movably installed in the valve cavity and can move along the airflow direction in the valve cavity; one end of the return spring 19 is connected to the valve core 18, and the other end is fixed to the valve seat 17, so as to push the valve core 18 toward one end of the valve seat 17 to achieve a closed state; the valve button 16 is connected to the valve core 18, and by pressing the valve button 16, the valve core 18 is pushed to move to the open state.

[0048] It should be noted that when gas enters from the air inlet, the valve core 18 moves under the impetus of the airflow, allowing the gas to enter the airbag 2. One end of the return spring 19 is connected to the valve core 18, and the other end is fixed to the valve seat 17. Under normal circumstances, the return spring 19 pushes the valve core 18 in the return direction, thereby keeping the one-way valve 15 in a closed state and ensuring that gas cannot flow back from the airbag 2. The valve button 16 is connected to the valve core 18. The operator can overcome the elastic force of the return spring 19 by pressing the valve button 16, moving the valve core 18 to an open state, thereby allowing gas to be discharged through the second air hole 7. This structural design ensures the airtightness of the airbag 2, while achieving a deflation function through a simple pressing operation.

[0049] In this embodiment, the puncture body 1 includes an outer puncture body 20 and an inner puncture body 21, and a gap portion 22 is provided between the outer puncture body 20 and the inner puncture body 21. One end of the gap portion 22 is connected to the second air hole 7, and the other end is connected to the airbag 2; the inner puncture body 21 is provided with an inner cavity, and one end of the first air hole 6 is connected to the inner cavity.

[0050] It should be noted that when the gas enters the gap portion 22 through the second air hole 7, it will smoothly enter the airbag 2, providing a channel for the inflation of the airbag 2. The inner puncture body 21 is provided with an inner cavity, and one end of the first air hole 6 is connected to the inner cavity, thereby providing a gas supply channel for the establishment of the joint cavity. This structural design enables the puncture body 1 to provide independent air paths for the joint cavity and the airbag 2 respectively. Through the clever channel distribution and air hole setting, effective functional separation is achieved, which not only ensures the expansion of the airbag 2 but also ensures the stability of the joint cavity, thereby improving the safety and convenience of the surgical operation.

[0051] As a preferred scheme of the embodiment, the first annular groove 23 and the second annular groove 24 are arranged at one end of the inner puncture body 21 in a spaced manner, and the sealing rings 25 are arranged in the first annular groove 23 and the second annular groove 24, respectively; the third groove 26 is arranged between the first annular groove 23 and the second annular groove 24, the third groove 26 is communicated with the first gas hole 6, and the gas permeable hole 29 communicated with the inner cavity is arranged on the inner wall of the third groove 26. Through the combination of the groove and the gas permeable hole 29, the smoothness and the sealing performance of the gas path are ensured, the operation safety and the accuracy in the gas switching process are greatly improved, and the gas leakage problem is effectively avoided.

[0052] In the embodiment, the positioning ring 27 is further arranged at the predetermined position of the outer side wall of the puncture body 1, the positioning ring 27 is arranged above the air bag 2, and the positioning gap is formed between the positioning ring 27 and the air bag 2.

[0053] The purpose of this design is to provide additional positioning function, helping doctors to accurately control the position of the puncture device during the operation. Through the arrangement of the positioning ring 27, the up and down sliding of the puncture device during the operation can be prevented, and the stability and accuracy of the operation are improved.

[0054] Further, the adjusting assembly 28 is arranged between the positioning ring 27 and the puncture body 1, the adjusting assembly 28 includes the damping ring and the tension assembly; the damping ring is sleeved on the outer side wall of the puncture body 1, the tension assembly is connected with the damping ring, and the tension assembly is used for changing the tension state of the damping ring sleeve.

[0055] When the tension assembly is in the tension state, the damping ring is tightly attached to the outer side wall of the puncture body 1, and the positioning ring 27 is fixed; when the tension assembly is loosened, the damping ring is relaxed, and the height of the positioning ring 27 can be freely adjusted along the outer side wall of the puncture body 1. Such design not only enables the height of the positioning ring 27 to be flexibly adjusted according to actual needs, but also guarantees the stability and safety of the positioning ring 27 in the fixed state, which is convenient for doctors to adjust the position of the puncture device during the operation, and further improves the flexibility and convenience of the operation.

[0056] The above-described embodiments are only used to illustrate the technical solutions of the present application, but not limit the same; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A puncture structure for a joint cavity, characterized in that: It comprises a puncture body (1), the outer side wall of the puncture body (1) is provided with an air bag (2) and a connecting boss (3), and one end surface of the connecting boss (3) is provided with an air inlet interface (4); A chamber (5) is provided in the connecting boss (3), and a first air hole (6) and a second air hole (7) are provided on the inner wall of the chamber (5), wherein the first air hole (6) is communicated with the inner cavity of the puncture body (1), and the second air hole (7) is communicated with the air bag (2); A ventilation valve core (8) is movably connected in the chamber (5), and the ventilation valve core (8) is moved so that the ventilation valve core (8) blocks the first air hole (6) or the second air hole (7).

2. The puncture structure for joint cavity according to claim 1, characterized in that: The ventilation valve core (8) comprises a main rod (9), and both ends of the main rod (9) are respectively provided with a pressing portion (10) for pressing the ventilation valve core (8) to move, and the pressing portion (10) is protruding from the connecting boss (3); A first blocking ring (11) and a second blocking ring (12) are arranged at intervals on the main body rod (9), and the distance between the first blocking ring (11) and the second blocking ring (12) is smaller than the distance between the first air hole (6) and the second air hole (7).

3. The puncture structure for joint cavity according to claim 2, characterized in that: A first inner groove (13) and a second inner groove (14) are arranged at intervals on the inner wall of the chamber (5); the first air hole (6) is arranged on the inner side wall of the first inner groove (13); and the second air hole (7) is arranged on the inner side wall of the second inner groove (14); The distance between the first inner groove (13) and the second inner groove (14) is equal to the centerline distance between the first blocking ring (11) and the second blocking ring (12).

4. The puncture structure for joint cavity according to claim 1, characterized in that: A one-way valve (15) is provided on the path of the second air hole (7), and the one-way valve (15) is provided with a valve button (16). The lower end surface of the connecting boss (3) is provided with a mounting groove, and the valve button (16) is received in the mounting groove. Pressing the valve button (16) puts the one-way valve (15) in an open state.

5. The puncture structure for joint cavity according to claim 4, characterized in that: The one-way valve (15) comprises a valve seat (17), a valve core (18) and a return spring (19); the valve seat (17) is arranged on the path of the second air hole (7), a valve cavity is formed inside the valve seat (17), and the valve core (18) is movably installed in the valve cavity and can move in the valve cavity along the airflow direction; One end of the return spring (19) is connected to the valve core (18), and the other end is fixed to the valve seat (17), so as to push the valve core (18) toward one end of the valve seat (17) to achieve a closed state; the valve button (16) is connected to the valve core (18), and the valve core (18) is pushed to an open state by pressing the valve button (16).

6. The puncture structure for joint cavity according to claim 1, characterized in that: The puncture body (1) includes an outer puncture body (20) and an inner puncture body (21), a gap portion (22) is provided between the outer puncture body (20) and the inner puncture body (21), one end of the gap portion (22) is communicated with the second air hole (7), and the other end is connected to the air bag (2); The inner puncture body (21) is provided with an inner cavity, and one end of the first air hole (6) is communicated with the inner cavity.

7. The puncture structure for joint cavity according to claim 6, characterized in that: One end of the inner puncture body (21) is provided with a first annular groove (23) and a second annular groove (24) at intervals, and a sealing ring (25) is provided in the first annular groove (23) and the second annular groove (24), respectively; A third groove (26) is provided between the first annular groove (23) and the second annular groove (24), the third groove (26) is communicated with the first air hole (6), and an air hole (29) communicating with the inner cavity is provided on the inner wall of the third groove (26).

8. The puncture structure for joint cavity according to claim 1, characterized in that: A positioning ring (27) is further provided at a preset position on the outer side wall of the puncture body (1). The positioning ring (27) is provided above the airbag (2), and a positioning gap is formed between the positioning ring (27) and the airbag (2).

9. The puncture structure for joint cavity according to claim 8, characterized in that: An adjustment component (28) is provided between the positioning ring (27) and the puncture body (1), and the adjustment component (28) includes a damping ring and a tension component; The damping ring sleeve is arranged on the outer side wall of the puncture body (1), the elastic component is connected to the damping ring, and the elastic component is used to change the tightness of the damping ring sleeve.

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