Puncture positioning needle

Abstract

The utility model discloses a puncture positioning needle, this puncture positioning needle includes: puncture needle part, push rod part, positioning spring, puncture needle part includes: puncture needle tube, puncture needle handle, plug cap, and puncture needle tube has needle tip, and positioning spring includes positioning spring head part positioning hook and positioning spring tail, and positioning spring is by the needle tip and is worn into puncture needle tube in positioning spring tail, its characterized in that, the material of positioning spring is shape memory alloy, and it includes the first state when being located in puncture needle tube and the second state after releasing, when releasing positioning spring from puncture needle tube through push rod part, positioning spring restores from the first state to the second state rapidly, and in the second state, positioning spring carries out the anchoring positioning to the lesion, the puncture positioning needle of the utility model is accurate in positioning, and convenient operation.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a puncture positioning needle. Background Technology

[0002] With the development and widespread use of computed tomography (CT) technology, the detection rate of pulmonary nodules is increasing. Simultaneously, with the advancement of thoracic surgery, video-assisted thoracoscopic surgery (VATS) provides a minimally invasive approach for the diagnosis and treatment of pulmonary nodules. However, during thoracoscopic surgery, if the nodule diameter is less than 1.5 cm, it cannot be located intraoperatively through direct visualization or palpation, especially for soft, pure membranous hyaline nodules, further increasing the surgical difficulty.

[0003] In existing technologies, preoperative lung nodule localization suffers from problems such as easy needle dislodgement, poor visualization of location, and damage to the nodule during puncture. To address these issues, existing technologies employ puncture positioning needles with positioning springs; however, these needles are complex in structure, difficult to manufacture, inconvenient to operate, lack precise positioning, and cannot completely cover the nodule lesion. Therefore, designing a puncture positioning needle that provides accurate localization, has a simple structure, and causes minimal harm to the body is a pressing technical problem that needs to be solved in this field. Utility Model Content

[0004] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0005] A puncture positioning needle includes: a puncture needle component, a push rod component, and a positioning spring; the puncture needle component includes: a puncture needle tube, a puncture needle handle, and a cap; the puncture needle tube has a needle tip; the positioning spring includes a positioning spring head with a positioning hook and a positioning spring tail; the positioning spring is inserted into the puncture needle tube through the needle tip via the positioning spring tail; wherein, the positioning spring is made of shape memory alloy, and includes a first state when it is located in the puncture needle tube and a second state after release; when the positioning spring is released from the puncture needle tube by the push rod component, the positioning spring quickly returns from the first state to the second state, in which the positioning spring anchors and positions the lesion.

[0006] Furthermore, the shape memory alloy is a nickel-titanium alloy with a deformation temperature of 30°C.

[0007] Furthermore, the puncture needle tube is fixed on the puncture needle handle, which includes a head groove and a plug cap including a protrusion. The plug cap is secured to the puncture needle handle by the cooperation of the protrusion and the groove.

[0008] Furthermore, the push rod assembly includes a push rod and a push rod handle, with the push rod fixed to the push rod handle; the plug cap has a plug cap inner hole, and the push rod passes through the plug cap inner hole into the puncture needle assembly, and the positioning spring is gradually released from the puncture needle tube by pushing the push rod handle downward.

[0009] Furthermore, the puncture positioning needle also includes a puncture needle sheath and a push rod sheath, wherein the puncture needle sheath protects the puncture needle tube, and the push rod sheath protects the push rod.

[0010] Furthermore, the puncture needle handle is provided with an arrow and a parallel line, and the needle tip of the puncture needle tube includes: a needle tip, a bevel, and a back side provided on the opposite side of the bevel, with the arrow pointing to the back side and the needle tip.

[0011] Furthermore, the push rod is marked with a push rod mark, and the push rod stops when it is pushed until the push rod mark is aligned with the cap.

[0012] With this design, the present invention has at least the following advantages:

[0013] (1) The puncture positioning needle of this utility model is accurate and easy to operate.

[0014] (2) The puncture positioning needle of this utility model has fewer parts and is simple to assemble;

[0015] (3) This utility model has a simple structure, low cost, and is easy to implement. Attached Figure Description

[0016] The above is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, the following describes this utility model in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a schematic diagram of the puncture positioning needle structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the puncture needle structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the plug cap in this utility model;

[0020] Figure 4 This is a schematic diagram of the positioning spring structure of this utility model;

[0021] Figure 5 This is a schematic diagram illustrating the positioning effect of the positioning spring of this utility model;

[0022] Figure 6 This is a schematic diagram of the needle tip structure of the puncture needle tube of this utility model.

[0023] The attached figures are labeled as follows: 101 puncture needle tube, 1011 needle tip, 10111 tip, 10112 bevel, 10113 back side, 102 puncture needle handle, 102a arrow, 102b parallel line, 102c head groove, 103 plug, 103a plug inner hole, 103b protrusion, 201 push rod, 201a push rod marking, 202 push rod handle, 301 positioning spring, 301a positioning spring head positioning hook, 301b positioning spring tail, 301(Q) - positioning spring first state, 301(H) - positioning spring second state, 401 puncture needle sheath, 402 push rod sheath. Detailed Implementation

[0024] 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.

[0025] In this article, "up" and "down" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0026] In the following description, the end of each component closer to the operator is defined as the distal end, and the end farther from the operator is defined as the proximal end. These terms "proximal end" and "distal end" are used only for simplicity and clarity and should not be construed as limiting the scope of this invention.

[0027] See appendix Figure 1-6 This application discloses a puncture positioning needle for preoperative lung nodule localization. The puncture positioning needle includes: a puncture needle component, a push rod component, and a positioning spring 301. The puncture needle component includes: a puncture needle tube 101, a puncture needle handle 102, and a cap 103. The puncture needle tube 101 has a needle tip 1011. The positioning spring 301 includes a positioning hook 301a at the head of the positioning spring and a positioning tail 301b. The positioning spring is inserted into the puncture needle tube 101 through the needle tip 101 via the positioning tail 301b. The positioning spring 301 is made of shape memory alloy and includes a first state (301(Q)) when it is located in the puncture needle tube and a second state (301(H)) after release. When the positioning spring is released from the puncture needle tube 101 by the push rod component, the positioning spring 301 quickly returns to the second state from the first state. In the second state, the positioning spring 301 anchors and positions the lesion. The puncture needle tube 101 is marked with graduations. When the positioning spring 301 is inserted into the puncture needle tube 101, the positioning hook 301a of the positioning spring head is away from the needle tip 101a.

[0028] The shape memory alloy is a nickel-titanium alloy with a deformation temperature of 30°C. Nickel-titanium alloys possess a unique shape memory effect and superelasticity. The shape memory effect refers to the ability of nickel-titanium alloys to recover their original shape at a specific temperature. In this application, that specific temperature, i.e., the deformation temperature, is 30°C.

[0029] The puncture needle tube 101 is fixed to the puncture needle handle 102. The puncture needle handle 102 includes a head groove 102c, and the plug 103 includes a protrusion 103b. The protrusion 103b and the head groove 102c cooperate to secure the plug 103 to the puncture needle handle 102. Preferably, the puncture needle tube 101 is injection molded into the puncture needle handle 102.

[0030] The push rod assembly includes a push rod 201 and a push rod handle 202, with the push rod 201 fixed to the push rod handle 202. A cap 103 has a cap inner hole 103a, through which the push rod 201 passes into the puncture needle assembly. Pushing the push rod handle 202 downwards causes the positioning spring 301 to gradually release from the puncture needle tube 101. Preferably, the push rod 201 is injection-molded into the push rod handle 202.

[0031] Furthermore, the puncture positioning needle also includes a puncture needle sheath 401 and a push rod sheath 402, wherein the puncture needle sheath 401 protects the puncture needle tube 101, and the push rod sheath 402 protects the push rod 201.

[0032] Furthermore, the puncture needle handle is provided with an arrow 102a and a parallel line 102b. The needle tip 1011 of the puncture needle tube includes: a needle tip 10111, a bevel 10112, and a back surface 10113 disposed on the opposite side of the bevel 10112. The arrow 102a points to the back surface 10113 and the needle tip 10111. Furthermore, one side of the puncture needle handle is provided with an arrow 102a, and the other sides are provided with parallel lines 102b for easy gripping.

[0033] The push rod 201 is marked with a push rod mark 201a. The push rod 201 stops pushing when the push rod mark 201a is aligned with the cap 103.

[0034] The working method of the puncture positioning needle of this application is as follows: First, the location of the lesion is determined by a CT scanner, and the puncture position, puncture angle and puncture depth of the puncture needle tube 101 are calculated. The puncture needle sheath 401 is removed, and puncture is performed at the puncture position. The push rod sheath 402 is removed, and the push rod 201 is inserted into the inner hole 103a of the plug cap. The push rod 201 is slowly pushed until the push rod mark 201a is aligned with the plug cap 103. The position of the push rod 201 is kept still. At this time, the puncture needle handle 102 is pulled out of the human body until the puncture needle handle 102 is in contact with the push rod handle 202, and then it is pulled out of the human body to complete the lesion anchoring and marking operation.

[0035] Those skilled in the art will readily conceive of other embodiments of the present invention upon considering the utility model disclosed in the specification and embodiments. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the claims.

[0036] It should be understood that this invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

Claims

1. A puncture positioning needle, the puncture positioning needle comprising: Puncture needle components, push rod components, positioning spring; The puncture needle assembly includes: a puncture needle tube, a puncture needle handle, and a cap. The puncture needle tube has a needle tip, and the positioning spring includes a positioning spring head, a positioning hook, and a positioning spring tail. The positioning spring is inserted into the puncture needle tube through the needle tip via the positioning spring tail. The positioning spring is characterized in that it is made of a shape memory alloy and includes a first state when it is inside the puncture needle tube and a second state after release. When the positioning spring is released from the puncture needle tube by the push rod assembly, the positioning spring quickly returns from the first state to the second state. In the second state, the positioning spring anchors and positions the lesion.

2. The puncture positioning needle as described in claim 1, characterized in that, The shape memory alloy is a nickel-titanium alloy with a deformation temperature of 30℃.

3. The puncture positioning needle as described in claim 1 or 2, characterized in that, The puncture needle tube is fixed on the puncture needle handle. The puncture needle handle includes a head groove and a plug cap includes a protrusion. The plug cap is secured to the puncture needle handle by the cooperation of the protrusion and the groove.

4. The puncture positioning needle as described in claim 1 or 2, characterized in that, The push rod assembly includes a push rod and a push rod handle, with the push rod fixed to the push rod handle; the plug cap has an inner hole, through which the push rod passes into the puncture needle assembly, and by pushing the push rod handle downwards, the positioning spring is gradually released from the puncture needle tube.

5. The puncture positioning needle as described in claim 4, characterized in that, The puncture positioning needle also includes a puncture needle sheath and a push rod sheath, wherein the puncture needle sheath protects the puncture needle tube, and the push rod sheath protects the push rod.

6. The puncture positioning needle as described in claim 1 or 2, characterized in that, The puncture needle handle has an arrow and a parallel line. The needle tip of the puncture needle tube includes: a needle tip, a bevel, and a back side located on the opposite side of the bevel. The arrow points to the back side and the needle tip.

7. The puncture positioning needle as described in claim 1 or 2, characterized in that, The push rod has a push rod mark, and the push rod stops when it is pushed until the push rod mark is aligned with the cap.

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