A needle-knife device with injection and positioning functions

By designing a needle knife device with injection and positioning functions, the rod is connected to the syringe, the scale line is used for positioning, and the inclined cutting part cuts through the skin and flesh, which solves the problem that existing needle knives cannot penetrate the skin and cause secondary skin damage. This realizes the integration of injection and drug delivery, and improves the accuracy and safety of the operation.

CN224540609UActive Publication Date: 2026-07-24THE AFFILIATED HOSPITAL OF SOUTHWEST MEDICAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
THE AFFILIATED HOSPITAL OF SOUTHWEST MEDICAL UNIV
Filing Date
2025-04-08
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing clinical medical needle knife instruments cannot reach the required depth to penetrate the skin, making subsequent injection and drug administration impossible, and require a second skin puncture operation, which poses a risk of infection.

Method used

Design a needle knife device with injection and positioning functions. The top of the rod is connected to the syringe, the scale lines on the outside of the rod are used for positioning, the inclined cutting part at the bottom of the rod is used to cut the skin and flesh, the inside of the rod is hollow, the connecting cap is threaded to the syringe, and the fixing block is anti-slip, so as to realize the integrated operation of injection and positioning.

Benefits of technology

It achieves precise positioning of the needle insertion depth, avoids secondary skin puncture, reduces patient discomfort and infection risk, and improves the convenience and safety of the operation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a needle knife technical field's a kind of needle knife device with injection and positioning function, including the stem of needle knife, the stem top is fixedly connected with connecting piece, the stem is flat cross section, the stem outside is drawn and is equipped with the scale line for measurement, the stem bottom is equipped with the cutting-in portion for cutting open skin tissue, the cutting-in portion is arranged obliquely, the stem inside is hollow, stem is flat elliptical rod, the connecting piece of stem top can be fixed with the bottom of injector, to facilitate stem to be in-depth skin muscle tissue and carry out injection operation, avoid the need secondary break open and then carry out injection operation after needle knife treatment, for operator it can be accurately positioned needle depth, and it can be realized that needle knife and injection administration are not replaced under instrument, reduce the medical operation of secondary skin break of patient.
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Description

Technical Field

[0001] This utility model relates to the field of needle knife, specifically a needle knife device with injection and positioning functions. Background Technology

[0002] A needle knife is an acupuncture tool made of metal that resembles both a needle and a knife in shape. It is a product of the organic combination of soft tissue release surgery. Needle knife therapy is a closed release technique between surgical and non-surgical methods. It is formed by combining acupuncture methods with incision surgery methods.

[0003] Current clinical medical needle knife instruments cannot meet the required depth of skin penetration. In addition, needle knives only have a blunt dissection function and cannot achieve the function of subsequent injection and drug delivery. Furthermore, it is impossible to observe the depth of the needle knife penetrating into the skin and flesh. Moreover, after needle knife treatment, patients need to undergo a second skin puncture, which can easily cause discomfort or infection. Therefore, it is necessary to design a needle knife device with injection and positioning functions to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a needle knife device with injection and positioning functions to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a needle knife device with injection and positioning functions, comprising a rod of a needle knife, wherein a connector is fixedly connected to the top of the rod, and the rod has a flat cross-section.

[0006] Preferably, the connector includes a connecting cap fixedly connected to the top of the rod, the inner side of the connecting cap being provided with a threaded portion for connecting to the syringe, and the bottom of the connecting cap communicating with the rod.

[0007] Preferably, the connecting cap is fixedly connected to two sides with fixing blocks for picking up and fixing.

[0008] Preferably, the outer side of the rod is marked with scale lines for measurement.

[0009] Preferably, the fixing block has multiple grooves evenly arranged on both sides to prevent slippage.

[0010] Preferably, the bottom of the rod body has a cutting portion for cutting through the skin and flesh tissue, and the cutting portion is inclined.

[0011] Preferably, the rod body is hollow inside.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. The rod is a flat, oval shape. It can be fixed to the bottom of the syringe through the connector at the top of the rod, so that the rod can penetrate deep into the skin and muscle tissue for injection. This avoids the need to break open the skin again after needle knife treatment for injection. For the operator, it can accurately position the needle depth and can perform needle knife and injection without changing instruments, reducing the need for patients to break the skin twice.

[0014] 2. The connecting cap is mainly made of rubber. The connecting cap can be screwed to the bottom of the syringe through the threaded part, which improves the stability and convenience of disassembling or installing the rod. This allows the injection solution to be delivered deep into the muscle through the rod via the connecting cap, effectively avoiding the need to break open again for injection after needle knife treatment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 This is a left-side sectional perspective view of the overall structure of this utility model.

[0017] In the diagram: 1. Rod body; 2. Connecting cap; 3. Threaded part; 4. Fixing block; 5. Scale line; 6. Groove; 7. Cut-in part. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0019] Please refer to Figure 1-2 As shown, this utility model provides a needle knife device with injection and positioning functions, including a needle knife rod 1, a connector fixedly connected to the top of the rod 1, the rod 1 has a flat cross-section, scale lines 5 for measurement are drawn on the outside of the rod 1, and an incision part 7 for cutting the skin and flesh tissue is opened at the bottom of the rod 1. The incision part 7 is inclined, and the inside of the rod 1 is hollow.

[0020] It should be added that the scale line 5 on the outer side of the rod 1 makes it easy for medical personnel to observe the depth of the rod 1 into the skin, and for the operator, it can accurately locate the needle insertion depth. The cutting part 7 at the bottom of the rod 1 can not only cut the skin and muscle, but also make it easy for the rod 1 to be inserted deep into the flesh. The rod 1 is a flat oval rod, and it can be fixed to the bottom of the syringe through the connector at the top of the rod 1, so that the rod 1 can be inserted into the skin and muscle tissue for injection. This avoids the need to break open again after needle knife treatment and then perform injection. It also allows needle knife and injection to be performed without changing instruments, reducing the discomfort of secondary skin breaking for the patient.

[0021] Specifically, the connector includes a connecting cap 2 fixedly connected to the top of the rod 1, and the inner side of the connecting cap 2 is provided with a threaded part 3 for connecting with the syringe. The bottom of the connecting cap 2 is connected to the rod 1.

[0022] The connecting cap 2 is mainly made of rubber. The connecting cap 2 can be screwed to the bottom of the syringe through the threaded part 3, which improves the stability and convenience of disassembling or installing the rod 1. This allows the injection liquid to be delivered into the muscle through the rod 1 via the connecting cap 2, effectively avoiding the need to break open again for injection after needle knife treatment.

[0023] More specifically, the connecting cap 2 has fixed blocks 4 on both sides for holding and fixing. The fixing blocks 4 have multiple grooves 6 evenly arranged on both sides to prevent slipping. The fixing blocks 4 are semi-circular. The two fixing blocks 4 are used to drive the rod 1 to cut the skin and insert it deep into the flesh through the connecting cap 2. The multiple grooves 6 on both sides of the fixing blocks 4 can prevent the medical staff from slipping when picking up the rod 1 and increase the contact area for picking up the fixing blocks 4.

[0024] Working principle: When in use, take the fixing block 4, and then the fixing block 4 drives the cutting part 7 at the bottom of the rod 1 through the connecting cap 2 to cut the skin and flesh. When it is necessary to inject medicine, hold the fixing block 4, and then let the fixing block 4 drive the rod 1 through the connecting cap 2 to insert into the muscle. The scale line 5 on the outside of the rod 1 shows the depth of the rod 1 into the muscle. Then, the syringe is screwed to the connecting cap 2 through the threaded part 3. Then, the medicine is injected into the muscle through the rod 1 by the syringe.

[0025] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0026] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A needle knife device with injection and positioning functions, comprising a needle knife shaft (1), characterized in that: The top of the rod (1) is fixedly connected to a connector, which includes a connector cap (2) fixedly connected to the top of the rod (1). The inner side of the connector cap (2) is provided with a threaded part (3) for connecting with a syringe. The bottom of the connector cap (2) is connected to the rod (1). The rod (1) has a flat cross-section.

2. The needle knife device with injection and positioning functions according to claim 1, characterized in that: The connecting cap (2) has fixed blocks (4) on both sides for taking and fixing.

3. The needle knife device with injection and positioning functions according to claim 1, characterized in that: The rod (1) has scale lines (5) drawn on its outer side for measurement.

4. The needle knife device with injection and positioning functions according to claim 2, characterized in that: The fixing block (4) has multiple grooves (6) on both sides for anti-slip purposes, which are evenly arranged.

5. The needle knife device with injection and positioning functions according to claim 1, characterized in that: The bottom of the rod (1) is provided with a cutting part (7) for cutting the flesh tissue, and the cutting part (7) is set at an angle.

6. The needle knife device with injection and positioning functions according to claim 1, characterized in that: The rod (1) is hollow inside.