Minimally invasive surgical instrument

Abstract

The utility model discloses a minimally invasive surgical instrument which comprises a suction and injection handle, a liquid suction connector and a transfusion connector, the liquid suction connector and the transfusion connector are arranged at the upper end of the suction and injection handle, the minimally invasive surgical instrument further comprises a connecting sleeve, a needle head and an abutting device, and the connecting sleeve comprises a first connecting cavity and a second connecting cavity; the suction and injection handle is detachably installed in the first connecting cavity, and the needle head is detachably installed in the second connecting cavity through an abutting device. A plurality of clamping blocks are sequentially arranged on the side face of the needle head in the circumferential direction of the needle head, matched clamping grooves are formed in the positions, corresponding to the clamping blocks, of the second connecting cavity, and the clamping blocks are arranged in the clamping grooves. The connecting sleeve is arranged, the needle head and the suction and injection handle are connected through the connecting sleeve, dismounting is convenient, meanwhile, the clamping block is clamped in the clamping groove, the needle head is prevented from falling off, the situation that the needle head is unstable due to too large injection pressure is avoided, and the safety of an operation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a minimally invasive surgical instrument. Background Art

[0002] Hydrotenoid needle therapy is a type of minimally invasive surgery. The entire treatment process is performed mainly through hydrotenoid needles. It has low requirements for the treatment environment. At the same time, the surgery causes little damage and has no sequelae.

[0003] The utility model patent with patent number CN201821041541.9 discloses a rheumatism treatment system, in particular, a water tendon needle rheumatism treatment system, which aims to irrigate the inflammatory fluid in the joints and tissues through water tendon needles, loosen the adhesions, and dredge the blocked meridians. It is characterized by fast effect, stable efficacy, and low treatment cost.

[0004] Although this rheumatism treatment system has the advantages of fast effect, stable efficacy and low treatment cost, the needle of the hydronephrosis needle in the device is directly mounted on the syringe. When the injection pressure is too high, it may cause the needle to be unstable and affect the safe progress of the operation. This needs further improvement. Utility Model Content

[0005] The utility model aims to provide a minimally invasive surgical instrument, aiming to improve the problem that the needle of the water tendon needle in the existing device is directly mounted on the needle tube, and when the injection pressure is too large, the needle may become unstable, affecting the safe conduct of the operation.

[0006] The utility model is implemented as follows: a minimally invasive surgical instrument, including a suction handle, a suction connector and an infusion connector, wherein the upper end of the suction handle is provided with the suction connector and the infusion connector, and further includes a connecting sleeve, a needle and an abutment device, wherein the connecting sleeve includes a first connecting cavity and a second connecting cavity; the suction handle is detachably installed in the first connecting cavity, and the needle is detachably installed in the second connecting cavity through the abutment device; a plurality of clamping blocks are sequentially arranged on the side surface of the needle along its circumferential direction, and a matching clamping groove is arranged at the position of the clamping block in the second connecting cavity, and the clamping block is arranged in the clamping groove.

[0007] Preferably, a mounting thread is provided at the lower end of the suction handle, and the first connecting chamber is rotatably mounted on the lower end of the suction handle via the mounting thread.

[0008] Preferably, a sealing gasket is provided at the inner bottom end of the first connecting cavity, and the lower end of the suction handle is sealed against the inner bottom end of the first connecting cavity through the sealing gasket.

[0009] Preferably, the needle head comprises a needle seat, an injection hole, a clamping block and a needle tube; a through injection hole is provided in the needle seat, a needle tube connected to the injection hole is provided at the lower end of the needle seat, and a clamping block is fixedly provided on the side of the needle seat.

[0010] Preferably, a mounting column is provided in the second connecting cavity, and the mounting column is a hollow tube column, the upper end of the mounting column is connected to the first connecting cavity, and the lower end of the mounting column extends and is inserted in the injection hole.

[0011] Preferably, the abutment device includes a mounting plate and a return spring, one end of the return spring is fixedly arranged at the inner bottom end of the second connecting cavity, and the other end is fixedly connected to the mounting plate, and the mounting plate is sleeved on the mounting column and abuts against the upper end of the needle seat.

[0012] Preferably, a sliding groove is provided inside the second connecting cavity on the elastic telescopic path of the mounting plate, and the mounting plate is slidably engaged in the sliding groove at a position corresponding to the sliding groove.

[0013] Preferably, the card slot is an inverted L-shaped structure, and the card block in the needle head is connected to the second connecting cavity through the card slot.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model is provided with a connecting sleeve, which connects the needle and the suction and injection handle, which is convenient for disassembly. At the same time, the card block is connected to the card slot to prevent the needle from falling off, avoid the situation where the needle is unstable due to excessive injection pressure, and improve the safety of the operation.

[0016] 2. The utility model can provide a sealing pad to seal the suction handle and the connecting sleeve, thereby improving the sealing performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model in front cross-section;

[0018] Figure 2 This utility model Figure 1 The structural diagram at A in the middle;

[0019] Figure 3 It is a structural schematic diagram of the first connecting cavity of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the second connecting cavity of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the needle of the utility model.

[0022] In the figure: 1. suction and injection handle; 101. mounting thread; 2. connecting sleeve; 201. first connecting cavity; 202. second connecting cavity; 203. mounting column; 204. sealing gasket; 205. sliding groove; 206. card slot; 3. needle; 301. needle seat; 302. injection hole; 303. card block; 304. needle tube; 4. abutment device; 401. mounting plate; 402. reset spring; 5. suction connector; 6. infusion connector. DETAILED DESCRIPTION

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] The following is a further description with reference to the accompanying drawings and specific embodiments:

[0025] Example 1

[0026] like Figure 1-Figure 3 As shown, a minimally invasive surgical instrument comprises an aspiration handle 1, a suction connector 5 and an infusion connector 6, wherein the upper end of the aspiration handle 1 is provided with the suction connector 5 and the infusion connector 6, and an external device is connected through the suction connector 5 and the infusion connector 6, and further comprises a connecting sleeve 2, a needle 3 and an abutment device 4, wherein the connecting sleeve 2 comprises a first connecting cavity 201 and a second connecting cavity 202, and the needle 3 and the aspiration handle 1 are conveniently installed by providing the first connecting cavity 201 and the second connecting cavity 202; the aspiration handle 1 is detachably installed in the first connecting cavity 201, and a mounting thread 101 is provided at the lower end of the aspiration handle 1, and the first connecting cavity 201 is rotatably installed at the lower end of the aspiration handle 1 through the mounting thread 101, and a sealing pad 204 is provided at the inner bottom end of the first connecting cavity 201, and the lower end of the aspiration handle 1 is sealed against the inner bottom end of the first connecting cavity 201 through the sealing pad 204, and the disassembly is convenient by rotating the mounting thread 101, and the sealing setting can be performed through the sealing pad 204.

[0027] like Figure 3-Figure 5As shown, the needle 3 is detachably installed in the second connecting cavity 202 through the abutment device 4; a plurality of blocks 303 are sequentially arranged on the side of the needle 3 along its circumferential direction, and a matching slot 206 is arranged at the position of the second connecting cavity 202 corresponding to the block 303, and the block 303 is arranged in the slot 206, and the slot 206 is an inverted L-shaped structure. The block 303 in the needle 3 is connected to the second connecting cavity 202 through the slot 206, and the needle 3 can be connected to the slot 206 through the block 303, and the connection can be completed by rotation. The needle 3 includes a needle seat 301, an injection hole 302, a block 303 and a needle tube 304; the needle seat 301 is provided with a through injection hole 302, so that the liquid in the suction handle 1 can be connected to the needle 3 through the injection hole 302; the lower end of the needle seat 301 is provided with a needle tube 304 connected to the injection hole 302, and the block 303 is fixedly provided on the side of the needle seat 301, and a mounting column 203 is provided in the second connecting cavity. The mounting column 203 is a hollow tube column, and the upper end of the mounting column 203 is connected to the first connecting cavity 201, and the lower end extends and is inserted in the injection hole 302. By arranging the mounting column 203 in the first connecting cavity 201, the needle seat 301 is inserted in the mounting column 203, forming a sealed installation; the abutment device 4 includes a mounting plate 401 and a return spring 402, one end of the return spring 402 is fixedly arranged at the inner bottom end of the second connecting chamber 202, and the other end is fixedly connected to the mounting plate 401, the mounting plate 401 is sleeved on the mounting column 203, and abuts against the upper end of the needle seat 301, and a sliding groove 205 is arranged on the elastic telescopic path of the mounting plate 401 corresponding to the interior of the second connecting chamber 202, and the mounting plate 401 is slidably engaged in the sliding groove 205 at a position corresponding to the sliding groove 205, and the mounting plate 401 is abutted against the upper end of the needle seat 301 through the return spring 402, so that the needle seat 301 is stably engaged in the second connecting chamber 202.

[0028] Example 2

[0029] like Figure 1-Figure 3 As shown, a minimally invasive surgical instrument includes a suction handle 1, a suction connector 5 and an infusion connector 6. The upper end of the suction handle 1 is provided with the suction connector 5 and the infusion connector 6, and also includes a connecting sleeve 2, a needle 3 and an abutment device 4. The connecting sleeve 2 includes a first connecting cavity 201 and a second connecting cavity 202; the suction handle 1 can be detachably installed in the first connecting cavity 201, and the lower end of the suction handle 1 is provided with a mounting thread 101. The first connecting cavity 201 is rotatably installed on the lower end of the suction handle 1 through the mounting thread 101. The inner bottom end of the first connecting cavity 201 is provided with a sealing gasket 204, and the lower end of the suction handle 1 is sealed and abutted against the inner bottom end of the first connecting cavity 201 through the sealing gasket 204.

[0030] like Figure 3-Figure 5As shown, the needle 3 is detachably installed in the second connecting cavity 202 through the abutment device 4; a plurality of blocks 303 are sequentially arranged on the side of the needle 3 along its circumferential direction, and a matching slot 206 is arranged at the position of the block 303 in the second connecting cavity 202, and the block 303 is arranged in the slot 206, and the slot 206 is an inverted L-shaped structure. The block 303 in the needle 3 is connected to the second connecting cavity 202 through the slot 206. The needle head 3 comprises a needle seat 301, an injection hole 302, a block 303 and a needle tube 304; the needle seat 301 is provided with a through injection hole 302, the lower end of the needle seat 301 is provided with a needle tube 304 connected to the injection hole 302, a block 303 is fixedly provided on the side of the needle seat, a mounting column 203 is provided in the second connecting cavity, the mounting column 203 is a hollow tube column, the upper end of the mounting column 203 is connected to the first connecting cavity 201, and the lower end extends and is inserted into the injection hole 302; the abutment mounting Device 4 includes a mounting plate 401 and a return spring 402, one end of the return spring 402 is fixedly arranged at the inner bottom end of the second connecting cavity 202, and the other end is fixedly connected to the mounting plate 401, the mounting plate 401 is sleeved on the mounting column 203, and abuts against the upper end of the needle seat 301, and a sliding groove 205 is arranged on the elastic telescopic path of the mounting plate 401 corresponding to the interior of the second connecting cavity 202, and the mounting plate 401 is slidably engaged in the sliding groove 205 at a position corresponding to the sliding groove 205.

[0031] The working principle of the utility model is as follows: the mounting thread 101 at the lower end of the suction and injection handle 1 is rotated and installed in the first connecting cavity 201 in the connecting sleeve 2, and then the needle seat 301 in the needle 3 is inserted into the second connecting cavity 202, and at the same time, the injection hole 302 is aligned with the mounting column 203, and the clamping block 303 is aligned with the clamping groove 206, and the needle seat 301 is pushed inwardly, and the needle seat 301 pushes the mounting plate 401 to slide inwardly. When the mounting plate 401 slides to the bottom, the clamping block 303 slides to the bottom of the clamping groove 206, and then the needle seat 301 is rotated, so that the clamping block 303 is rotated and clamped in the clamping groove 206, so that the needle seat 301 does not fall off, and at the same time, the needle seat 301 is squeezed in the clamping groove 206 through the abutment of the mounting plate 401 to prevent rotation.

[0032] To sum up, the utility model provides a connecting sleeve 2, which connects the needle 3 and the suction handle 1, so as to facilitate disassembly. At the same time, the clamping block 303 is clamped in the clamping groove 206 to prevent the needle 3 from falling off, avoid the situation where the needle is unstable due to excessive injection pressure, and improve the safety of the operation; by providing a sealing pad 204, the suction handle 1 and the connecting sleeve 2 can be sealed and connected, thereby improving the sealing performance of the device.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A minimally invasive surgical instrument, comprising an aspiration handle (1), an aspiration connector (5) and an infusion connector (6), wherein the upper end of the aspiration handle (1) is provided with the aspiration connector (5) and the infusion connector (6), characterized in that: The invention also comprises a connecting sleeve (2), a needle (3) and an abutment device (4); the connecting sleeve (2) comprises a first connecting cavity (201) and a second connecting cavity (202); the suction handle (1) is detachably mounted in the first connecting cavity (201); the needle (3) is detachably mounted in the second connecting cavity (202) via the abutment device (4); a plurality of clamping blocks (303) are sequentially arranged on the side surface of the needle (3) along its circumferential direction; the second connecting cavity (202) is provided with a matching clamping groove (206) at a position corresponding to the clamping block (303); the clamping block (303) is arranged in the clamping groove (206).

2. A minimally invasive surgical instrument according to claim 1, characterized in that: The lower end of the suction handle (1) is provided with a mounting thread (101), and the first connecting chamber (201) is rotatably mounted on the lower end of the suction handle (1) via the mounting thread (101).

3. A minimally invasive surgical instrument according to claim 2, characterized in that: The inner bottom end of the first connecting cavity (201) is provided with a sealing gasket (204), and the lower end of the suction handle (1) is sealed against the inner bottom end of the first connecting cavity (201) through the sealing gasket (204).

4. A minimally invasive surgical instrument according to claim 1, characterized in that: The needle head (3) comprises a needle seat (301), an injection hole (302), a clamping block (303) and a needle tube (304); the needle seat (301) is provided with a through injection hole (302), a needle tube (304) connected to the injection hole (302) is provided at the lower end of the needle seat (301), and a clamping block (303) is fixedly provided on the side of the needle seat (301).

5. A minimally invasive surgical instrument according to claim 4, characterized in that: A mounting column (203) is provided in the second connecting cavity. The mounting column (203) is a hollow tube column. The upper end of the mounting column (203) is connected to the first connecting cavity (201), and the lower end extends and is inserted into the injection hole (302).

6. A minimally invasive surgical instrument according to claim 5, characterized in that: The abutment device (4) comprises a mounting plate (401) and a return spring (402); one end of the return spring (402) is fixedly arranged at the inner bottom end of the second connecting cavity (202), and the other end is fixedly connected to the mounting plate (401); the mounting plate (401) is sleeved on the mounting column (203) and abuts against the upper end of the needle seat (301).

7. A minimally invasive surgical instrument according to claim 6, characterized in that: A sliding groove (205) is provided inside the second connection cavity (202) on an elastic telescopic path corresponding to the mounting plate (401), and the mounting plate (401) is slidably engaged in the sliding groove (205) at a position corresponding to the sliding groove (205).

8. The minimally invasive surgical instrument according to claim 1, characterized in that: The clamping slot (206) is an inverted L-shaped structure, and the clamping block (303) in the needle head (3) is clamped in the second connecting cavity (202) through the clamping slot (206).

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