Improved tunnel needle

Abstract

The utility model provides an improved tunnel needle, which belongs to the technical field of medical instruments and comprises a tunnel needle body, a puncture needle head is arranged at one end of the tunnel needle body, arc-shaped limiting grooves are arranged on two sides of the tunnel needle body, an adjusting grip is sleeved outside the tunnel needle body, an operating sleeve is arranged on one side of the adjusting grip, and an adjusting block is embedded at the top of the operating sleeve. An operation groove is formed in the top of the adjusting block, a pressing button is hinged to the inner wall of the operation groove, a torsional spring is arranged at the hinged position of the pressing button and the operation groove, a clamping plate is hinged to one side of the bottom of the pressing button, and a movable groove is formed in one side of the bottom of the inner wall of the operation groove; according to the improved tunnel needle provided by the utility model, the tunnel needle body, the adjusting grip and other parts are integrally made of medical stainless steel, so that the improved tunnel needle can resist high temperature and high pressure, can be sterilized and can be repeatedly used.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical apparatus and instruments, and particularly relates to an improved tunnel needle. BACKGROUND

[0002] The existing tunnel needle is used for creating a subcutaneous tunnel, and a subcutaneous tunnel is formed between a puncture port and a catheter outlet, but in the operation process, in order to reduce damage to adjacent blood vessels and nerves caused by the tunnel needle, the front end of the tunnel needle is blunt and round, and thus cannot directly penetrate the skin. The "improved deep vein tunnel type PICC tunnel needle" disclosed in the application number "CN202322775455.8" is also a mature technology, which can save the operation of skin expansion and reduce the operation time by retracting the tip of the puncture rod into the puncture tube to perform skin penetration and extraction. However, in the process of subcutaneous puncture tunneling, the blunt tip of the puncture rod protrudes from the puncture tube, reducing damage to adjacent blood vessels and nerves. However, the device still has the following defects: in actual use, the subcutaneous tunneling method is divided into forward and reverse puncture, and the traditional tunnel needle can only satisfy one mode, and the flexibility is not enough to effectively fix the length and depth of the penetration needle body, and the depth position of the penetration needle body is fixed. SUMMARY

[0003] The utility model aims at providing an improved tunnel needle, which aims to solve the problem that the existing tunnel needle can only satisfy one mode, the flexibility is not enough to effectively fix the length and depth of the penetration needle body, and the depth position of the penetration needle body is fixed.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: including tunnel needle body, one end of tunnel needle body is equipped with puncture needle head, both sides of tunnel needle body are equipped with arc limit recess, the outside of tunnel needle body is equipped with adjusting handle, one side of adjusting handle is equipped with operation sleeve, the top of operation sleeve is equipped with adjusting block, the middle part of adjusting handle is equipped with communicating groove, tunnel needle body is connected in communicating groove, the top of adjusting block is equipped with operation slot, the inner wall of operation slot is hinged with press button, the hinged place of press button and operation slot is equipped with torsional spring, one side of the bottom of press button is hinged with clamping plate, one side of the bottom of the inner wall of operation slot is equipped with movable slot, the clamping plate is connected in movable slot, and the clamping plate is connected with arc limit recess.

[0005] In the improved tunnel needle embodiment of the utility model, the distance between the arc limit recesses is 10CM, and the distance between the arc limit recesses and the puncture needle head and the needle tail of the tunnel needle body is 5CM.

[0006] In the improved tunnel needle embodiment of the utility model, the tunnel needle body is provided with a reinforcing needle tube in the middle part, and the inner wall diameter of the tunnel needle body is 1.5.mm.

[0007] In the scheme, the strength of the tunnel needle body is improved by reinforcing the needle tube to avoid breakage during puncture of the tunnel needle body.

[0008] In the improved tunnel needle embodiment of the utility model, the puncture needle head is a blunt needle structure, and the tunnel needle body and the adjusting handle are both made of stainless steel.

[0009] In the improved tunnel needle embodiment of the utility model, a semicircular groove is formed at the end of the clamping plate, and the semicircular groove and the arc-shaped limiting groove are matched in size.

[0010] In the improved tunnel needle embodiment of the utility model, anti-skid textures are engraved on the outer wall of the adjusting handle, and a high-temperature-resistant PVE elastic belt sleeve is arranged on one side of the adjusting handle.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] After the tunnel needle body is sent into the adjusting handle, the adjusting block is pressed on one side to make the adjusting block pop up, the clamping plate is retracted into the operation groove, the tunnel needle body is moved, and after the position of the tunnel needle body is adjusted, the adjusting block is released and pressed on the other side to make the semicircular groove on the clamping plate inserted into the arc-shaped limiting groove for clamping, so that the position of the tunnel needle body is fixed to avoid movement of the tunnel needle body, the tunnel needle body is closely connected with the adjusting handle without rotation, the movement of the tunnel needle body can be effectively controlled, the operation is simpler, the adjusting block is pressed on one side to make the adjusting block pop up, the clamping plate is pulled out from the arc-shaped limiting groove, the tunnel needle body can be moved, and the production of antegrade and retrograde tunnels can be completed according to puncture requirements.

[0013] The overall material of the tunnel needle body, the adjusting handle and other parts is medical stainless steel, which can resist high temperature and high pressure, can be sterilized and reused, the tip is reasonably designed, is a blunt needle and a needle tip, is easier to break through subcutaneous tissue, and is not damaged. BRIEF DESCRIPTION OF DRAWINGS

[0014] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, are used together with the embodiments of the utility model to explain the utility model, and do not constitute a limitation on the utility model. In the drawings:

[0015] Figure 1 It is a structural schematic view of the utility model;

[0016] Figure 2 It is a sectional structure schematic view of the tunnel needle body of the utility model;

[0017] Figure 3 It is a sectional structure schematic view of the adjusting handle of the utility model;

[0018] Figure 4 The utility model discloses a card board structure schematic diagram.

[0019] In the drawing: 1, tunnel needle body;2, puncture needle head;3, arc limit recess;4, adjusting handle;5, operating sleeve;6, adjusting block;7, communication groove;

[0020] 8, operating groove;81, movable groove;9, press button;

[0021] 10, card board;101, semicircular recess;11, reinforced needle tube;12, high-temperature-resistant PVE elastic belt cover. Specific embodiments

[0022] The technical scheme in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the range protected by the utility model.

[0023] Please refer to Figure 1 Figure 3 The utility model provides the following technical scheme: an improved tunnel needle, including tunnel needle body 1, puncture needle head 2 is equipped with in tunnel needle body 1 one end, arc limit recess 3 is seted up in both sides of tunnel needle body 1, adjusting handle 4 is seted up outside tunnel needle body 1, operating sleeve 5 is equipped with in adjusting handle 4 one side, adjusting block 6 is embedded in operating sleeve 5 top, communication groove 7 is seted up in adjusting handle 4 middle part, tunnel needle body 1 is movably connected in communication groove 7, operating groove 8 is seted up in adjusting block 6 top, press button 9 is hinged to operating groove 8 inner wall, and torsional spring is equipped with in the hinge of press button 9 and operating groove 8, and press button 9 bottom one side is hinged to card board 10, and movable groove 81 is seted up in operating groove 8 inner wall bottom one side, and card board 10 is connected in movable groove 81, and card board 10 is hinged to arc limit recess 3.

[0024] Specific one improved tunnel needle embodiment, please refer to Figure 1 : the distance between arc limit recess 3 is 10CM, and the distance between arc limit recess 3 and puncture needle head 2 and the needle tail of tunnel needle body 1 is 5CM.

[0025] Please refer to Figure 1 : after sending tunnel needle body 1 into adjusting handle 4, press adjusting block 6 one side and make adjusting block 6 cock up, retract card board 10 in operating groove 8, move tunnel needle body 1, after adjusting the position of tunnel needle body 1, loosen adjusting block 6 and press adjusting block 6 other side, and card board 10 is hinged with arc limit recess 3, and the position of tunnel needle body 1 is fixed. ​

[0026] In a specific embodiment of the improved tunnel needle, please refer to Figure 2 : The middle part of the tunnel needle body 1 is provided with a reinforcing needle tube 11, and the inner wall diameter of the tunnel needle body 1 is 1.5 mm.

[0027] Please refer to Figure 2 : The strength of the tunnel needle body 1 is improved by the reinforcing needle tube 11 to avoid breaking during the puncture process.

[0028] In a specific embodiment of the improved tunnel needle, please refer to Figure 1 : The puncture needle 2 is a blunt needle structure, and the tunnel needle body 1 and the adjusting handle 4 are made of stainless steel.

[0029] Please refer to Figure 1 : The overall material is medical stainless steel, which can withstand high temperature and high pressure, can be sterilized and reused, the tip is designed reasonably, is a blunt needle, and the needle tip is more easily broken through the subcutaneous tissue, and is not damaged.

[0030] In a specific embodiment of the improved tunnel needle, please refer to Figure 4 : The end of the clamping plate 10 is provided with a semicircular groove 101, and the semicircular groove 101 is matched with the size of the arc-shaped limiting groove 3.

[0031] Please refer to Figure 4 : The semicircular groove 101 on the clamping plate 10 is inserted into the arc-shaped limiting groove 3 for clamping, so that the position of the tunnel needle body 1 is fixed, and the tunnel needle body 1 is prevented from moving. The tunnel needle body 1 and the adjusting handle 4 are connected tightly without rotation, which can effectively control the movement of the tunnel needle body 1, so that the operation is simpler. Pressing one side of the adjusting block 6 makes the adjusting block 6 lift up, and the clamping plate 10 is pulled out from the arc-shaped limiting groove 3, so that the tunnel needle body 1 can move.

[0032] In a specific embodiment of the improved tunnel needle, please refer to Figure 1 : The outer wall of the adjusting handle 4 is engraved with anti-slip texture, and one side of the adjusting handle 4 is provided with a high-temperature-resistant PVE elastic belt sleeve 12.

[0033] Please refer to Figure 1 : The high-temperature-resistant PVE elastic belt sleeve 12 on the adjusting handle 4 is convenient to bind the fingers, which is convenient for the user to hold the adjusting handle 4.

[0034] The utility model provides a kind of improved tunnel needle, specific use mode is: after sending tunnel needle body 1 into adjusting handle 4, press the one side of adjusting block 6 to make adjusting block 6 cock up, retracting clamping plate 10 in operating groove 8, remove tunnel needle body 1, after adjusting the position of tunnel needle body 1, loosen adjusting block 6 and press the other side of adjusting block 6, semicircular recess 101 on clamping plate 10 is inserted into arc limiting recess 3 and is clamped, make the position of tunnel needle body 1 be fixed, avoid tunnel needle body 1 to move, tunnel needle body 1 and adjusting handle 4 are connected closely without rotation, can effectively control tunnel needle body 1 movement, make operation more simple, press the one side of adjusting block 6 to make adjusting block 6 cock up, clamping plate 10 is pulled out from arc limiting recess 3, so that tunnel needle body 1 can be moved, overall material is medical stainless steel, can resist high temperature and high pressure, can be sterilized and reused, tip design is reasonable, blunt needle and needle tip, more easily break through subcutaneous tissue, and no damage.

[0035] Finally, it should be noted that: the above only for the preferred embodiments of the utility model and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part technical feature. Any modification, equivalent replacement, improvement etc. within the spirit and principle of the utility model, should be included in the protection scope of the utility model.

Claims

1. A modified tunnel needle comprising a tunnel needle body (1), characterized in that: The tunnel needle body (1) is provided with a puncture needle head (2) at one end, arc-shaped limiting grooves (3) are formed on both sides of the tunnel needle body (1), an adjusting handle (4) is sleeved outside the tunnel needle body (1), an operation sleeve (5) is arranged on one side of the adjusting handle (4), an adjusting block (6) is embedded at the top of the operation sleeve (5), a communication groove (7) is formed in the middle of the adjusting handle (4), the tunnel needle body (1) is movably connected in the communication groove (7), an operation groove (8) is formed at the top of the adjusting block (6), a pressing button (9) is hinged to the inner wall of the operation groove (8), a torsional spring is arranged at the hinged part of the pressing button (9) and the operation groove (8), a clamping plate (10) is hinged to one side of the bottom of the pressing button (9), a movable groove (81) is formed on one side of the bottom of the inner wall of the operation groove (8), the clamping plate (10) is connected in the movable groove (81), and the clamping plate (10) is clamped and connected with the arc-shaped limiting grooves (3).

2. The modified tunnel needle of claim 1, wherein: The distance between the arc-shaped limiting grooves (3) is 10CM, and the distance between the arc-shaped limiting grooves (3) and the puncture needle head (2) and the needle tail of the tunnel needle body (1) is 5CM.

3. The modified tunnel needle of claim 1, wherein: The tunnel needle body (1) is provided with a reinforcing needle tube (11) in the middle, and the inner wall diameter of the tunnel needle body (1) is 1.5mm.

4. The modified tunnel needle of claim 3, wherein: The puncture needle head (2) is a blunt needle structure, and the tunnel needle body (1) and the adjusting handle (4) are made of stainless steel.

5. The modified tunnel needle of claim 1, wherein: The end of the clamping plate (10) is provided with a semicircular groove (101), and the semicircular groove (101) is matched with the size of the arc-shaped limiting groove (3).

6. The modified tunnel needle of claim 1, wherein: The outer wall of the adjusting handle (4) is engraved with anti-skid texture, and the adjusting handle (4) is provided with a high-temperature-resistant PVE elastic belt sleeve (12) on one side.

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