Pulmonary nodule positioning device with puncture guide needle

Abstract

The utility model relates to a pulmonary nodule positioning device with a puncture guide needle, which belongs to the technical field of surgical medical instruments and comprises a puncture guide needle and a positioning needle sleeved inside the puncture guide needle, the puncture guide needle consists of a needle tube, an inner needle, a needle tube seat and an inner needle cap, the positioning needle comprises a needle rod and a handle fixedly connected to the top end of the needle rod, and a sealing structure is arranged between the needle rod and the handle. According to the pulmonary nodule positioning device with the puncture guide needle, by arranging a pushing key and a pushing pipe, a worker can conveniently push the pushing pipe, by arranging a built-in sealing ring, the sealing effect can be achieved between the pushing pipe and the handle, air is prevented from entering the pushing pipe from the top end of the needle rod, and by arranging a sealing plug, the sealing effect is good, and the puncture guide needle is convenient to use. After the needle rod is inserted into the needle tube, the needle tube seat and the handle are in a sealed state, air is prevented from entering from the top of the needle tube seat, and then the pneumothorax risk of a patient can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to surgical medical instrument technical field, concretely is a lung nodule positioning device with puncture guide needle. BACKGROUND

[0002] Puncture guide needle is an important tool for interventional therapy. Under local anesthesia, it can guide other medical instruments to enter the body for treatment.

[0003] In clinical, when removing lung lesion tissue, preoperative positioning is needed, that is, lung nodule positioning is realized through CT guided percutaneous puncture, and positioning needle is usually used for preoperative positioning, which is an effective preoperative positioning method. The positioning structure under CT guidance is simple to operate and has high positioning success rate.

[0004] However, there are still some problems in the prior art: 1. The positioning needle needs to be scanned and adjusted several times during puncture, and the handle of the positioning needle may be displaced if it is too large and heavy; 2. The risk of pneumothorax, the pleural cavity is connected with the outside world through the needle tube of the positioning needle during the operation, which may cause pneumothorax; 3. It is not easy to find the positioning line under the thoracoscope, or it is not convenient to judge the positioning depth, so a lung nodule positioning device with puncture guide needle is proposed to solve the above problems. UTILITY MODEL CONTENT

[0005] In view of the shortcomings of the prior art, the utility model provides a lung nodule positioning device with puncture guide needle, which has the advantages of good sealing effect, and solves the problem that air may enter the inside of the positioning needle during the operation, thereby increasing the risk of pneumothorax in patients.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a lung nodule positioning device with puncture guide needle, comprising a puncture guide needle and a positioning needle sleeved in the puncture guide needle, the puncture guide needle is composed of a needle tube, an inner needle, a needle tube seat and an inner needle cap, the positioning needle comprises a needle rod and a handle fixedly connected to the top end of the needle rod, and a sealing structure is arranged between the needle rod and the handle;

[0007] The sealing structure comprises a push tube slidingly connected to the inside of the handle and extending into the inside of the needle rod, an inner sealing ring is clamped on one side of the handle close to the needle rod, an installation hole matched with the inner sealing ring is formed in the inner wall of the handle, the push tube penetrates the inner sealing ring, a sealing plug is fixedly connected to one end of the handle close to the needle rod, and the inner wall of the sealing plug is in close contact with the outer wall of the needle rod.

[0008] Further, the inner diameter of the built-in sealing ring is smaller than the outer diameter of the push tube, a through hole is arranged in the sealing plug, and the diameter of the through hole in the sealing plug is smaller than the outer diameter of the needle rod.

[0009] Further, the handle is slidably connected with a push key extending into the handle, and the push key is fixedly connected with the top end of the push tube on one side of the handle.

[0010] Further, the needle rod is sleeved with a positioning spring on the side away from the handle, the top of the handle is provided with a positioning line extending into the push key and the push tube, and the side close to the positioning spring of the positioning line is provided with a color mark.

[0011] Further, the needle tube seat is fixedly connected with the top end of the needle tube, and the needle tube is provided with an enhanced developing ring on the end away from the needle tube seat.

[0012] Further, the inside of the needle tube seat is slidably connected with an inner needle extending into the needle tube, the bottom end of the inner needle is fixedly connected with a needle tip extending into the bottom of the needle tube, the top end of the inner needle is fixedly connected with an inner needle cap extending into the top of the needle tube seat, and the inner needle cap is threadedly connected with the needle tube seat.

[0013] Further, the needle tube seat and the needle tube are both hollow structures, and the inside of the needle tube seat is communicated with the inside of the needle tube.

[0014] Compared with the prior art, the lung nodule positioning device with the puncture guide needle has the following beneficial effects:

[0015] 1. The lung nodule positioning device with the puncture guide needle has the effects that the push key and the push tube are arranged, the push tube is conveniently pushed by the staff, the built-in sealing ring is arranged, the sealing effect between the push tube and the handle is achieved, air is prevented from entering into the inside of the needle rod from the top end of the needle rod, the sealing plug is arranged, the needle tube seat and the handle are in a sealed state when the needle rod is inserted into the inside of the needle tube, air is prevented from entering from the top of the needle tube seat, and the risk of pneumothorax of the patient is effectively reduced.

[0016] 2. The lung nodule positioning device with the puncture guide needle has the effects that the needle tube and the inner needle are arranged, the needle tube is first punctured to a predetermined position in the puncture process, the inner needle cap is arranged, the inner needle is conveniently taken out by the staff, the needle tube forms a positioning channel at this time, the needle rod and the handle are arranged, the needle rod is positioned, the staff is conveniently operated, and the needle tube of the pleural cavity is not easily displaced in the operation process, air is prevented from entering into the inside of the positioning needle, and the problem that the risk of pneumothorax of the patient is increased is solved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is the structure schematic view of the puncture guide needle of the utility model;

[0018] Fig. 2 It is the structure schematic view of the needle tube and the inner needle of the utility model;

[0019] Fig. 3 It is the structure section view of the positioning needle of the utility model;

[0020] Fig. 4 It is the structure schematic view of the positioning needle and the guide needle of the utility model;

[0021] Fig. 5 It is the structure schematic view of the positioning spring of the utility model;

[0022] Fig. 6 It is the structure schematic view of the color mark of the utility model.

[0023] In the figure: 11 needle tube, 12 inner needle, 111 needle tube seat, 112 enhanced developing ring, 121 inner needle cap, 122 needle tip, 21 needle rod, 22 handle, 23 push key, 24 push tube, 25 positioning spring, 26 built-in sealing ring, 27 sealing plug, 251 positioning line, 2511 color mark. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly 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, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] Embodiment one:

[0026] Please refer to Figs. 1 to 6 The lung nodule positioning device with a puncture guide needle in the embodiment comprises a puncture guide needle and a positioning needle sleeved in the puncture guide needle, the puncture guide needle is composed of a needle tube 11, an inner needle 12, a needle tube seat 111 and an inner needle cap 121, the positioning needle comprises a needle rod 21 and a handle 22 fixedly connected to the top end of the needle rod 21, a sealing structure is arranged between the needle rod 21 and the handle 22, the sealing structure comprises a push tube 24 slidingly connected to the inside of the handle 22 and extending into the inside of the needle rod 21, a built-in sealing ring 26 is clamped on the side of the inside of the handle 22 close to the needle rod 21, an installation hole matched with the built-in sealing ring 26 is formed in the inner wall of the handle 22, the push tube 24 penetrates through the built-in sealing ring 26, a sealing plug 27 is fixedly connected to the end of the handle 22 close to the needle rod 21, and the inner wall of the sealing plug 27 is in close contact with the outer wall of the needle rod 21.

[0027] The inner diameter of the built-in sealing ring 26 is smaller than the outer diameter of the pushing tube 24, the inside of the sealing plug 27 is provided with a through hole, the diameter of the through hole on the sealing plug 27 is smaller than the outer diameter of the needle rod 21, one side of the handle 22 is slidingly connected with the pushing key 23 extending into the inside thereof, and the side of the pushing key 23 located in the inside of the handle 22 is fixedly connected with the top end of the pushing tube 24.

[0028] It should be noted that the handle 22 and the needle rod 21 are both hollow structures, the inside of the handle 22 is communicated with the inside of the needle rod 21, one side of the handle 22 is provided with a sliding groove matched with the pushing key 23, and the built-in sealing ring 26 and the sealing plug 27 are both made of elastic sealing material. When the pushing tube 24 is inserted into the inside of the built-in sealing ring 26, the pushing tube 24 is tightly attached to the built-in sealing ring 26 due to the effect of the elastic material.

[0029] In the embodiment, the needle rod 21 is sleeved with the positioning spring 25 on the side far away from the handle 22, the top of the handle 22 is provided with the positioning line 251 extending into the inside of the pushing key 23 and the pushing tube 24, and the side of the positioning line 251 close to the positioning spring 25 is provided with the color mark 2511.

[0030] The positioning spring 25 is made of memory alloy wire, the four spring wires are circular arc-shaped and uniformly distributed, the positioning spring 25 can be shrunk and placed in the inside of the needle tube 11 due to the excellent elasticity and shape memory effect of the memory alloy, and the positioning spring 25 can restore to the original shape after being pushed out from the inside of the needle tube 11 to embed into the lung tissue to achieve good positioning effect; the positioning line 251 uses soft and high-strength surgical suture, one end of the positioning line 251 is connected with the positioning spring 25, and the diameter of the positioning line 251 is smaller than the inner diameter of the pushing tube 24. When the positioning needle is withdrawn from the body after the release operation of the positioning spring 25 is completed, the positioning line 251 will remain in the patient's body along with the positioning spring 25.

[0031] It should be noted that the color mark 2511 is arranged in multiple different colors at intervals to form a plurality of color segments connected in a loop, each color segment is set to the same length, after the positioning operation is completed, part of the color mark 2511 is in the inside of the lung tissue, and the other part is outside the lung tissue, when the lung nodule resection surgery is performed, the colored color mark can be quickly found under the thoracoscope, and the depth of the positioning spring 25 can be calculated by checking the number of color segments exposed from the lung tissue, and then the lung nodule resection surgery is completed by referring to the direction and depth of the positioning line 251.

[0032] Embodiment two:

[0033] Please refer to Figs. 1 to 2On the basis of the first embodiment, the needle tube 11 is fixedly connected with the needle tube seat 111 at the top end, and the needle tube 11 is provided with an enhanced imaging ring 112 at the end away from the needle tube seat 111, the inner needle 12 is slidably connected in the inside of the needle tube seat 111 and extends into the inside of the needle tube 11, the bottom end of the inner needle 12 is fixedly connected with a needle tip 122 extending to the bottom of the needle tube 11, and the top end of the inner needle 12 is fixedly connected with an inner needle cap 121 extending to the top of the needle tube seat 111, and the connection between the inner needle cap 121 and the needle tube seat 111 is a threaded connection.

[0034] In the embodiment, the positioning spring 25 is pre-installed in the inside of the needle tube 11, the needle tube seat 111 and the needle tube 11 are both hollow structures, the inside of the needle tube seat 111 is in communication with the inside of the needle tube 11, and the enhanced imaging ring 112 is a plurality of regularly arranged grooves surrounding the needle tube, which can enhance the imaging effect under the image.

[0035] By setting the needle tube 11 and the inner needle 12, the needle tube 11 can be first punctured to the predetermined position during the puncture process, the inner needle cap 121 is set to facilitate the staff to take out the inner needle, the needle tube 11 can form a positioning channel at this time, the needle rod 21 and the handle 22 are set to position the needle rod 21, and the staff can operate conveniently and the needle rod 21 is not easy to move.

[0036] The working principle of the above embodiment is as follows:

[0037] First, the staff inserts the inner needle 12 into the inside of the needle tube 11 through the needle tube seat 111, at this time the needle tip 122 on the inner needle 12 is pierced out from the bottom of the needle tube 11, then the inner needle cap 121 is screwed with the needle tube seat 111, then the staff punctures the patient with the inner needle 12 and the needle tube 11, after puncturing to the specified position, the inner needle 12 is taken out by rotating the inner needle cap 121, then the needle rod 21 is inserted into the inside of the needle tube 11, at this time the sealing plug 27 is also inserted into the inside of the needle tube seat 111 to form a sealed space, when the needle rod 21 is inserted, the push button 23 is slid downward to drive the push tube 24 to move downward, so that the positioning spring 25 is ejected.

[0038] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it is intended to be limited only by the words recited in the appended claims. The scope of the present application shall be limited only by the claims.

[0039] While the embodiments of the present application have been shown and described with respect to particular embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the application. Therefore, the scope of the application should not be limited by the embodiments, but should be defined only in accordance with the following claims and their equivalents.

Claims

1. A lung nodule positioning device with a puncture guide needle, comprising a puncture guide needle and a positioning needle sleeved inside the puncture guide needle, characterized in that: The puncture guiding needle is composed of a needle tube (11), an inner needle (12), a needle tube base (111) and an inner needle cap (121), the positioning needle comprises a needle rod (21) and a handle (22) fixedly connected to the top end of the needle rod (21), and a sealing structure is arranged between the needle rod (21) and the handle (22); The sealing structure comprises a push tube (24) slidingly connected to the inside of the handle (22) and extending into the inside of the needle rod (21), an inner sealing ring (26) is clamped on the side of the inside of the handle (22) close to the needle rod (21), an installation hole matched with the inner sealing ring (26) is formed in the inner wall of the handle (22), the push tube (24) penetrates through the inner sealing ring (26), and a sealing plug (27) is fixedly connected to the end of the handle (22) close to the needle rod (21).

2. The lung nodule localization device with a piercing guide needle of claim 1, wherein: The inner diameter of the inner sealing ring (26) is smaller than the outer diameter of the push tube (24), a through hole is formed in the inside of the sealing plug (27), and the diameter of the through hole on the sealing plug (27) is smaller than the outer diameter of the needle rod (21).

3. The lung nodule localization device with a piercing guide needle of claim 1, wherein: A push key (23) extending into the inside of the handle (22) is slidingly connected to one side of the handle (22), and the push key (23) is fixedly connected to the top end of the push tube (24) on the side in the inside of the handle (22).

4. The lung nodule localization device with a piercing guide needle of claim 1, wherein: A positioning spring (25) is sleeved on the side of the outside of the needle rod (21) away from the handle (22), a positioning line (251) extending into the inside of the push key (23) and the push tube (24) is arranged on the top of the handle (22), and a color mark (2511) is arranged on the side of the positioning line (251) close to the positioning spring (25).

5. The lung nodule localization device with a puncture guide needle of claim 1, wherein: The needle tube base (111) is fixedly connected to the top end of the needle tube (11), and an enhanced developing ring (112) is formed in the end of the needle tube (11) away from the needle tube base (111).

6. The lung nodule localization device with a puncture guide needle of claim 5, wherein: The inside of the needle tube base (111) is slidingly connected with the inner needle (12) extending into the inside of the needle tube (11), the bottom end of the inner needle (12) is fixedly connected with a needle tip (122) extending to the bottom of the needle tube (11), the top end of the inner needle (12) is fixedly connected with an inner needle cap (121) extending to the top of the needle tube base (111), and the inner needle cap (121) is in threaded connection with the needle tube base (111).

7. The lung nodule localization device with a puncture guide needle of claim 5, wherein: The needle tube base (111) and the needle tube (11) are both hollow structures, and the inside of the needle tube base (111) is in communication with the inside of the needle tube (11).

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