Trocar for puncture

Abstract

The utility model discloses a trocar for puncture, and belongs to the technical field of trocar. Comprising a puncture needle and a puncture cannula, a sealing column is fixedly arranged at the upper end of the puncture needle, the sealing column is fixedly sleeved with a ball sleeve, the puncture cannula comprises a positioning cylinder, a guide tube and a sealing ring, the positioning cylinder, the guide tube and the sealing ring are integrally and fixedly connected, and the positioning cylinder is fixedly sleeved with a rotating sleeve. The puncture needle can be fastened and pinched through the handheld ball sleeve, the puncture needle is guided through the guide tube of the puncture cannula, the needle head of the puncture needle is effectively protected, after the puncture needle punctures a certain position, the rotating rod can be conveniently and manually rotated through the three ball rods on the rotating ring, the stud is rotated through the rotating rod, and the puncture needle is tightly pressed by the arc-shaped pressing block through the threaded sleeve. And two pinching seats are fixedly arranged on the outer surface of the positioning cylinder, so that the pinching operation of fingers is facilitated, and the positioning treatment of the puncture cannula is facilitated through a fan-shaped pad.

Description

Technical Field

[0001] The present application relates to the technical field of trocars, and more specifically, to a trocar for puncture. Background Art

[0002] The puncture trocar is a common and important tool in the medical field. It is a common medical device and is often used for puncture surgery or operations, such as extracting body fluid samples, injecting drugs or performing spinal anesthesia. The existing public technology number is CN212521940U, which proposes a puncture trocar. The device reduces the force arm between the operator's hand-held part and the puncture needle tip, making the puncture more accurate and simple, and also reduces the labor intensity of medical staff. In view of the above-mentioned related technologies, the utility model inventor believes that the following defects still exist: when the puncture trocar in the reference is used, the puncture needle cannot achieve the guiding effect, which makes the needle easy to bend, and after the puncture needle punctures a certain depth, it cannot achieve positioning processing, and an auxiliary locator needs to be used, which is difficult to operate and increases the work intensity of the staff. In view of this, we propose a puncture trocar. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] The purpose of the present application is to provide a trocar for puncture, which solves the technical problem that when the puncture trocar in the comparative literature in the above-mentioned background technology is used, the puncture needle cannot achieve the guiding function, which makes the needle head easy to bend, and after the puncture needle punctures a certain depth, it cannot be positioned and needs to use an auxiliary positioner, which is difficult to operate and increases the work intensity of the staff. The trocar has a novel structure and is easy to operate and use. The puncture needle can be tightened and pinched by a hand-held ball sleeve, and the puncture needle is guided by the guide tube of the puncture sleeve to effectively protect the puncture needle needle. After the puncture needle punctures a certain position, the three ball rods on the rotating ring can be conveniently manually rotated to rotate the rotating rod, and the stud is rotated by the rotating rod, and the screw sleeve causes the arc-shaped pressure block to tightly press the puncture needle to position the puncture needle, and the outer surface of the positioning cylinder is fixed with two pinching seats to facilitate the pinching operation of fingers, and the fan-shaped pad facilitates the positioning of the puncture sleeve.

[0005] 2. Technical solution

[0006] The technical solution of the present application provides a puncture trocar needle, comprising: a puncture needle and a puncture cannula, a sealing column is fixedly provided on the upper end of the puncture needle, a ball sleeve is fixedly sleeved on the outside of the sealing column, the puncture cannula comprises a positioning cylinder, a guide tube and a sealing ring, the positioning cylinder, the guide tube and the sealing ring are fixedly connected in an integrated manner, a rotating sleeve is fixedly sleeved at the positioning cylinder, a positioning mechanism is installed at the rotating sleeve, the positioning mechanism comprises a rotating rod, the rotating rod is rotatably connected to the rotating sleeve, the rotating rod is located inside the positioning cylinder and is fixedly provided with a stud, the stud is threadedly sleeved with a screw sleeve, two L-shaped plug-in blocks are fixedly provided on the screw sleeve, the L-shaped plug-in blocks are both slidably plugged with the rotating sleeve, the screw sleeve is fixedly connected with an arc-shaped pressure block, the arc-shaped pressure block tightly presses the outer surface of the puncture needle, and two pinch seats are fixedly provided on the outer surface of the positioning cylinder.

[0007] By adopting the above technical scheme, when a puncture needle is used for puncture treatment of a hemodialysis patient, the puncture needle can be inserted into the puncture sleeve from the end of the sealing ring by holding the ball sleeve, and the puncture needle is guided by the guide tube to effectively protect the puncture needle tip. After the puncture needle punctures a certain position, the stud is rotated by the rotating rod, and the two L-shaped plug-in blocks on the screw sleeve are slidably plugged with the rotating sleeve, and then the screw sleeve will move linearly, and the arc-shaped pressing block will tightly press the puncture needle, so that the puncture needle can be positioned, and the outer surface of the positioning cylinder is fixed with two pinching seats, which can conveniently pinch the puncture sleeve and facilitate the positioning of the puncture sleeve.

[0008] Optionally, the ball sleeve is sleeved on the outer surface of the sealing ring, the sealing column sealing sleeve is arranged inside the sealing ring, and four anti-sliding blocks are fixedly provided on the outer surface of the ball sleeve and are evenly distributed along the outer surface of the ball sleeve.

[0009] By adopting the above technical solution, the puncture needle is inserted into the puncture sleeve, and the sealing ring is connected through the ball sleeve and the sealing column, so that the puncture needle and the puncture sleeve are tightly matched and connected.

[0010] Optionally, a guide perforation is provided in the guide tube, and the guide tube guides the puncture needle through the guide perforation.

[0011] By adopting the above technical solution, the puncture needle can be inserted through the guide hole opened in the guide tube, thereby achieving the guiding purpose and effectively protecting the needle head of the puncture needle.

[0012] Optionally, the pinch seat includes a fan-shaped pad, and a T-shaped block is fixed on the fan-shaped pad.

[0013] By adopting the above technical solution, the pinching seat composed of the fan-shaped pad and the T-shaped block is convenient for finger pinching operation, and the fan-shaped pad is convenient for positioning the puncture sleeve.

[0014] Optionally, the rotating rod is fixedly sleeved with a rotating ring, and three ball clubs are fixedly provided on the rotating ring.

[0015] By adopting the above technical solution, the rotating rod can be conveniently rotated manually through the three ball rods on the rotating ring.

[0016] 3. Beneficial effects

[0017] One or more technical solutions provided in the technical solution of the present application have at least the following technical effects or advantages: the cannula needle has a novel structure and is easy to operate and use. The puncture needle can be tightened and pinched by holding the ball sleeve, and the puncture needle is guided by the guide tube of the puncture cannula to effectively protect the puncture needle tip. After the puncture needle punctures a certain position, the three ball rods on the rotating ring can be used to manually rotate the rotating rod, and the stud is rotated by the rotating rod, and the screw sleeve causes the arc-shaped pressure block to tightly press the puncture needle to position the puncture needle. The outer surface of the positioning tube is fixed with two pinching seats to facilitate finger pinching operation, and the fan-shaped pad is used to facilitate the positioning of the puncture cannula. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a puncture trocar disclosed in a preferred embodiment of the present application;

[0019] Figure 2 This is a schematic diagram of a puncture cannula structure of a puncture cannula needle disclosed in a preferred embodiment of the present application;

[0020] Figure 3 A trocar for puncture disclosed in a preferred embodiment of the present application Figure 2 The enlarged structural diagram at A in the middle;

[0021] Figure 4 This is a schematic diagram of the puncture needle structure of a trocar for puncture disclosed in a preferred embodiment of the present application;

[0022] Explanation of the numbers in the figure: 1. puncture needle; 11. sealing column; 12. ball sleeve; 121. anti-sliding block; 2. puncture sleeve; 21. positioning cylinder; 22. guide tube; 221. guide perforation; 23. sealing ring; 24. rotating sleeve; 3. pinch seat; 31. fan-shaped pad; 32. T-shaped block; 4. positioning mechanism; 41. rotating ring; 42. ball rod; 43. rotating rod; 44. stud; 45. screw sleeve; 46. L-shaped plug-in block; 47. arc-shaped pressure block. DETAILED DESCRIPTION

[0023] The present application is further described in detail below in conjunction with the accompanying drawings.

[0024] Reference Figures 1 to 4The embodiment of the present application provides a puncture trocar needle, comprising: a puncture needle 1 and a puncture cannula 2, a sealing column 11 is fixedly provided on the upper end of the puncture needle 1, a ball sleeve 12 is fixedly sleeved on the outside of the sealing column 11, the puncture cannula 2 comprises a positioning cylinder 21, a guide tube 22 and a sealing ring 23, the positioning cylinder 21, the guide tube 22 and the sealing ring 23 are fixedly connected in one piece, a rotating sleeve 24 is fixedly sleeved at the positioning cylinder 21, a positioning mechanism 4 is installed at the rotating sleeve 24, the positioning mechanism 4 comprises a rotating rod 43, the rotating rod 43 is rotatably connected to the rotating sleeve 24, the rotating rod 43 is located inside the positioning cylinder 21 and is fixedly provided with a stud 44, the stud 44 is threadedly sleeved with a screw sleeve 45, two L-shaped plug-in blocks 46 are fixedly provided on the screw sleeve 45, the L-shaped plug-in blocks 46 are slidably inserted with the rotating sleeve 24, and the screw sleeve 45 is fixedly connected with an arc pressure Block 47, the arc-shaped pressing block 47 tightly presses the outer surface of the puncture needle 1, and two pinching seats 3 are fixedly arranged on the outer surface of the positioning tube 21. When the puncture needle 1 is used for puncture treatment on a hemodialysis patient, the puncture needle 1 can be inserted into the puncture sleeve 2 from the end of the sealing ring 23 by holding the ball sleeve 12, and the puncture needle 1 is guided and processed by the guide tube 22 to effectively protect the needle head of the puncture needle 1. After the puncture needle 1 punctures a certain position, the stud 44 is rotated by the rotating rod 43. Because the two L-shaped plug-in blocks 46 on the screw sleeve 45 are slidably plugged with the rotating sleeve 24, the screw sleeve 45 will move linearly, and the arc-shaped pressing block 47 is tightly pressed against the puncture needle 1 for processing, so that the puncture needle 1 can be positioned and processed, and the outer surface of the positioning tube 21 is fixed with two pinching seats 3, which can conveniently pinch the puncture sleeve 2 and facilitate the positioning and processing of the puncture sleeve 2.

[0025] Reference Figure 1 and Figure 4 The ball sleeve 12 is sleeved on the outer surface of the sealing ring 23, and the sealing column 11 is sealed inside the sealing ring 23. Four anti-sliding blocks 121 are fixedly provided on the outer surface of the ball sleeve 12 and are evenly distributed along the outer surface of the ball sleeve 12. The puncture needle 1 is inserted into the puncture sleeve 2, and the sealing ring 23 is sealed through the ball sleeve 12 and the sealing column 11, so that the puncture needle 1 is tightly matched and connected with the puncture sleeve 2.

[0026] Reference Figure 2 and Figure 3 A guide hole 221 is provided in the guide tube 22, and the guide tube 22 guides the puncture needle 1 through the guide hole 221. The puncture needle 1 can be connected through the guide hole 221 provided in the guide tube 22, thereby achieving the guiding purpose and effectively protecting the needle head of the puncture needle 1.

[0027] Reference Figure 1 and Figure 2 The pinching seat 3 includes a fan-shaped pad 31, on which a T-shaped block 32 is fixed. The pinching seat 3 composed of the fan-shaped pad 31 and the T-shaped block 32 is convenient for finger pinching operation, and the fan-shaped pad 31 facilitates the positioning of the puncture sleeve 2.

[0028] Reference Figure 2 and Figure 3 The rotating rod 43 is fixedly sleeved with a rotating ring 41 , and three ball rods 42 are fixedly provided on the rotating ring 41 . The rotating rod 43 can be conveniently rotated manually through the three ball rods 42 on the rotating ring 41 .

[0029] Working principle: When the puncture needle 1 is used for puncture treatment of hemodialysis patients, the puncture needle 1 can be inserted into the puncture sleeve 2 from the end of the sealing ring 23 by holding the ball sleeve 12, and the puncture needle 1 is guided by the guide tube 22 to effectively protect the needle head of the puncture needle 1. After the puncture needle 1 punctures a certain position, the three ball rods 42 on the rotating ring 41 can be used to conveniently manually rotate the rotating rod 43, and the stud 44 is rotated by the rotating rod 43. Because the two L-shaped plug-in blocks 46 on the screw sleeve 45 are slidably plugged with the rotating sleeve 24, the screw sleeve 45 will then move linearly, and the arc-shaped pressing block 47 will tightly press the puncture needle 1 for processing, so that the puncture needle 1 can be positioned for processing, and the outer surface of the positioning cylinder 21 is fixed with two pinch seats 3, and the pinch seat 3 is composed of a fan-shaped pad 31 and a T-shaped block 32, which is convenient for finger pinching operation, and the fan-shaped pad 31 is used to facilitate the positioning of the puncture sleeve 2.

Claims

1. A trocar for puncture, characterized in that: The invention comprises: a puncture needle (1) and a puncture sleeve (2); a sealing column (11) is fixedly provided at the upper end of the puncture needle (1); a ball sleeve (12) is fixedly sleeved on the outside of the sealing column (11); the puncture sleeve (2) comprises a positioning cylinder (21), a guide tube (22) and a sealing ring (23); the positioning cylinder (21), the guide tube (22) and the sealing ring (23) are fixedly connected in an integral manner; a rotating sleeve (24) is fixedly sleeved on the positioning cylinder (21); a positioning mechanism (4) is installed on the rotating sleeve (24); the positioning mechanism (4) comprises a rotating rod (43); The rotating rod (43) is rotatably connected to the rotating sleeve (24). The rotating rod (43) is located inside the positioning tube (21) and is fixedly provided with a stud (44). The stud (44) is threadedly sleeved with a screw sleeve (45). Two L-shaped plug-in blocks (46) are fixedly provided on the screw sleeve (45). The L-shaped plug-in blocks (46) are slidably inserted into the rotating sleeve (24). The screw sleeve (45) is fixedly connected with an arc-shaped pressing block (47). The arc-shaped pressing block (47) tightly presses the outer surface of the puncture needle (1). Two pinching seats (3) are fixedly provided on the outer surface of the positioning tube (21).

2. A puncture trocar according to claim 1, characterized in that: The ball sleeve (12) is sleeved on the outer surface of the sealing ring (23), the sealing column (11) is sealingly sleeved inside the sealing ring (23), and four anti-sliding blocks (121) are fixedly provided on the outer surface of the ball sleeve (12) and are evenly distributed along the outer surface of the ball sleeve (12).

3. A puncture trocar according to claim 1, characterized in that: A guide perforation (221) is provided in the guide tube (22), and the guide tube (22) guides the puncture needle (1) through the guide perforation (221).

4. A puncture trocar according to claim 1, characterized in that: The pinch seat (3) comprises a fan-shaped pad (31), and a T-shaped block (32) is fixedly provided on the fan-shaped pad (31).

5. The puncture trocar according to claim 1, characterized in that: The rotating rod (43) is fixedly sleeved with a rotating ring (41), and three ball rods (42) are fixedly arranged on the rotating ring (41).

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