CN215503301U - Puncture coaxial biopsy needle - Google Patents

Puncture coaxial biopsy needle Download PDF

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Publication number
CN215503301U
CN215503301U CN202121738980.7U CN202121738980U CN215503301U CN 215503301 U CN215503301 U CN 215503301U CN 202121738980 U CN202121738980 U CN 202121738980U CN 215503301 U CN215503301 U CN 215503301U
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China
Prior art keywords
outer sleeve
needle
needle core
puncture
trocar
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CN202121738980.7U
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Chinese (zh)
Inventor
王云
顾莉
周磊
吴超民
杜春玲
柯青
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QINGPU BRANCH OF ZHONGSHAN HOSPITAL FUDAN UNIVERSITY
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QINGPU BRANCH OF ZHONGSHAN HOSPITAL FUDAN UNIVERSITY
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Abstract

The utility model relates to a puncture coaxial biopsy needle, which comprises an outer sleeve and a needle core, wherein the head end of the outer sleeve is connected with a silicon cap in a threaded manner, a needle core seat at the tail end is connected with the outer sleeve seat in a threaded manner, and the length of the thread is equal to the distance between the tip end of the outer sleeve and the tip end of the needle core. Its advantages are: 1. the utility model utilizes the characteristic that the silicon cap can be automatically sealed, can reduce the operation of repeatedly inserting the needle core into the trocar, only needs the needle core when the trocar is firstly punctured and enters the lesion tissue, and once the position of the trocar is determined, the silicon cap can be automatically sealed in the process of repeatedly puncturing the sampling gun without repeatedly inserting the needle core after the needle core is pulled out. 2. The operation time is saved, and the pain of the patient is reduced. 3. Through reducing operating time and the trocar atress that the plug needle core of repeated plug caused and shift, the air embolism's emergence probability has been reduced to validity, greatly reduced the risk of lung aspiration biopsy. 4. The disinfection is simple and convenient, and the occurrence of iatrogenic infection is reduced.

Description

Puncture coaxial biopsy needle
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a puncture coaxial biopsy needle.
Background
CT or B-ultrasonic guided percutaneous lung puncture is a very common invasive examination means in clinic. The method aims to adopt a puncture needle to enter a lesion area in lung tissue through skin puncture to obtain a lung tissue biopsy specimen for disease diagnosis. During the puncture process, an operator must acquire the position information of the lung lesion through CT or B-ultrasonic scanning in advance and acquire a projection point of the lesion on the body surface through a certain method. Then the puncture needle is used to puncture the skin and the muscle layer of the chest wall from the projection point, and the puncture needle is confirmed to accurately puncture the lesion in the lung. The puncture needle used in the process is a tubular metal instrument with a needle core. After the puncture needle with the needle core is punctured into a focus, the needle core is pulled out, a lung puncture sampling gun is used for penetrating into the trocar, and the sampling gun is triggered to obtain a specimen. After the gun is withdrawn, the core needs to be replaced in the trocar to prevent air ingress and bleeding. Clinically, this procedure is often repeated by repeatedly using a sampling gun to puncture a sample through the trocar to obtain enough tissue to ensure a positive result.
In this process, there are the following problems:
1. in the process that an operator pulls out or inserts the needle core, the trocar is communicated with the outside air, pneumothorax is easily caused, and the 'piston effect' causes the puncture part to form an 'air bag-containing cavity' and even air embolism, so that the life of a patient is seriously threatened;
2. the needle core needs to be inserted and pulled repeatedly, so that the operation time is prolonged, and the pain of a patient is increased;
3. prolonged procedure time is accompanied by more respiratory cycles, and contraction and expansion of the lungs is accompanied by an increased risk of trocar displacement;
4. the trocar is repeatedly stressed due to the action of repeatedly inserting and pulling the trocar core, so that the risk of displacement of the trocar is increased;
5. the medical staff mostly master the puncture depth by virtue of operation experience, the visual effect of the positioning position is poor, the observation is not easy, and the problem of inaccurate puncture position is easily caused;
6. the tips of some outer sleeves and the stylet are both inclined plane openings, when blood flows out of the stylet during puncture, the outer sleeves are directly pushed to enable the tips to enter, the forward resistance of the mode is large, and sometimes the tip openings hung on the outer sleeves are damaged; in addition, the distance for pushing the outer sleeve forward is not necessarily equal to the distance between the tip of the outer sleeve and the tip of the stylet, when the pushing distance is small, the problem of failure in tube placement is easy to occur, and when the pushing distance is large, the tip of the outer sleeve is easy to damage.
The Chinese patent application: 201120043868.1 discloses a medical puncture trocar, the needle core passes through the inner cavity of the trocar sleeve and is arranged in the trocar sleeve, the needle core and the front end are needle core heads, the back of the needle core head is connected with a needle core bar, the back of the needle core bar is connected with a needle core handle. The needle sleeve is provided with a cavity, and the front end of the needle sleeve is provided with a needle head with an inclined conical surface; two symmetrical diversion holes are arranged near the needle head part; the wall of the needle sleeve is marked with scale marks and sleeved with a positioning plate; the rear part of the needle sleeve is provided with a needle sleeve cap, and the rear end of the needle sleeve cap is provided with a needle sleeve cap cover; the side surface of the needle sleeve cap is provided with a flow guide port which is a standard injector interface.
The Chinese patent application: 201921263234.X discloses a coaxial microcatheter biliary tract puncture needle for intervention, which comprises a puncture cannula and a puncture needle, wherein the outer side of the puncture cannula is sleeved with a sliding sleeve, the sliding sleeve and the puncture cannula are fixed through a locking knob, the puncture cannula consists of a cannula seat and a catheter, after the puncture is successful, the puncture needle is extracted from the puncture cannula, the puncture cannula is pushed into the biliary tract along the trend, a 0.018 guide wire is penetrated into the biliary tract along the puncture cannula, the puncture needle can be effectively prevented from falling off due to the respiratory floating of a patient, the puncture success rate can be improved, the puncture cannula can be fixed by arranging the sliding sleeve and sewing the sliding sleeve on the surface of the skin of a human body through a needle wire, the puncture cannula can be prevented from falling out of the biliary tract, when the puncture needle is extracted from the inner cavity of the puncture cannula, an opening in the middle part of an elastic rubber sheet can be automatically closed due to the elasticity of the elastic sheet, and can isolate air, can prevent germs from entering the biliary tract from the inner cavity of the puncture cannula.
However, the puncture needle cannot simultaneously avoid air embolism, is accurate in positioning and accurate in distance of the outer cannula, and the utility model designs a novel puncture biopsy needle aiming at the defects.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide a puncture coaxial biopsy needle.
In order to achieve the purpose, the utility model adopts the technical scheme that:
a puncture coaxial biopsy needle comprises an outer sleeve 1 and a needle core 2, wherein a silicon cap 3 is connected with the head end of the outer sleeve 1 through threads, an outer sleeve seat 4 and a needle core seat 5 are respectively arranged at the tail ends of the outer sleeve 1 and the needle core 2, the outer sleeve seat 4 is connected with the needle core seat 5 through threads 6, the length of each thread 6 is equal to the distance from the tip of the outer sleeve 1 to the tip of the needle core 2, scale marks 8 are arranged on the outer surface of the outer sleeve 1, and protruding marks 7 are respectively arranged at positions 5cm away from the head end and 10cm away from the outer surface; the outer lane of outer tube 1 is cylindric, and the hole is close to head end department and is the bell mouth, and hole diameter is from tail end to head end grow gradually promptly, and the inner wall in bell mouth is fixed with axially extended deflector, and the deflector is total four to around the axis evenly distributed in bell mouth, the deflector widens gradually along with the grow in bell mouth space, make between four deflectors form with the 2 external diameter assorted guide way of nook closing member.
Preferably, the tip of the outer sleeve 1 is a conical structure.
Preferably, the inner and outer surfaces of the needle core 2 are both cylindrical, and the tip is cut-off-shaped.
Preferably, the silicon cap 3 is made of a silicon material.
Preferably, the outer cannula holder 4 and the stylet holder 5 are provided with corresponding threads.
Preferably, the protruding mark 7 is a red mark.
The utility model has the advantages that:
1. the self-sealing feature of the 'silicon cap' is utilized to reduce the operation of inserting the needle core into the trocar repeatedly, the needle core is only needed when the trocar is punctured into the lesion tissue for the first time, once the position of the trocar is determined, the 'silicon cap' can be self-sealed in the repeated puncturing process of the sampling gun without repeatedly inserting the needle core. Can greatly save the operation time and reduce the pain of the patient. Through reducing operating time and the trocar atress that the plug needle core of repeated plug caused and shift, the air embolism's emergence probability has been reduced to validity, greatly reduced the risk of lung aspiration biopsy.
2. Outer sleeve pipe hole is the horn hole, the accuracy of sampling inspection for the biopsy provides effectual assurance, and when coaxial sleeve pipe pilot pin as the passageway injection medicine, can reduce medicine from pinhole spun speed, the resistance of use injection that can be fine, fine tolerance has again, the setting of deflector can effectively guarantee the nook closing member to carry out effectual radial positioning simultaneously, make the nook closing member can insert in the outer sleeve pipe and can not rock, thereby can guarantee the stability between outer sleeve pipe and nook closing member and realize smooth inserting the nook closing member and take out the outer sleeve pipe. The puncture position is more accurate, and the accuracy of biopsy sampling detection is improved.
3. During the puncture, the outer tube passes through helicitic texture with rotatory mode and fixes, during the use, when having blood to flow in the nook closing member, the outer tube can only be rotatory antedisplacement, the resistance that meets like this will be less than the craspedodrome a lot, when the outer tube just unscrews the spiral, the antedisplacement distance of outer tube just equals the tip of outer tube and the most advanced distance of nook closing member for the length of screw thread, can ensure the most advanced parallel and level of tip and the most advanced of nook closing member of outer tube like this, thereby avoided the problem of the most advanced distance of outer tube short or be longer than the most advanced distance of nook closing member to put the pipe failure that appears or damage outer tube head end.
4. The disinfection is simple and convenient, and the occurrence of iatrogenic infection is reduced.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic view of the external structure of the outer sleeve.
1. An outer sleeve;
2. a needle core;
3. a silicon cap;
4. an outer sleeve seat;
5. a needle core seat;
6. a thread;
7. highlighting the mark;
8. scale lines are marked.
Detailed Description
The utility model will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications can be made by those skilled in the art after reading the disclosure of the present invention, and equivalents fall within the scope of the appended claims.
Example 1
A puncture coaxial biopsy needle comprises an outer sleeve 1 and a needle core 2, wherein a silicon cap 3 is connected with the head end of the outer sleeve 1 in a threaded manner, and preferably, the tip of the outer sleeve 1 is of a conical structure. Preferably, the inner and outer surfaces of the needle core 2 are both cylindrical, and the tip is cut-off-shaped. Preferably, the silicon cap 3 is made of a silicon material.
The use method and the working principle of the embodiment are as follows:
before use, the preparation work is completed according to the conventional operation steps, when the preparation work is ready to start the puncture operation, the needle core 2 is inserted into the outer sleeve 1 with the silicon cap 3, the puncture position is determined, the needle core 2 is punctured into the thoracic cavity according to the preset direction, the tip of the needle core 2 is inserted into the lesion position, then the outer sleeve 1 is pushed into the lesion position of a patient, the puncture needle is fixed, the needle core 2 is pulled out, the silicon cap 3 is closed by itself, the sampling gun is inserted into the outer sleeve 1 with the silicon cap 3, and the sampling gun is triggered to obtain a sample. The sampling gun is pulled out to take out the obtained tissue, in the using process, when the sampling gun is pulled out, the silicon cap 3 is automatically closed to effectively prevent air from entering, and then the sampling gun is inserted into the outer sleeve 1 again to obtain the tissue. The operation is repeated until enough tissue is obtained, the outer sleeve 1 is pulled out, and the treatment such as wound disinfection, aseptic dressing, and the like is carried out.
After the use, the sterilization can be carried out by ethylene oxide, thereby ensuring the sterility in the use process and having simple and convenient application.
The added structure of the silicon cap 3 can effectively prevent air from entering the puncture part through the trocar, thereby greatly reducing the complication of puncture, in particular the occurrence probability of air embolism.
Example 2
The embodiment is further improved on the basis of embodiment 1, and a part of structure is added, so that the accuracy of biopsy sampling is improved. In the present embodiment, the explanation and description of the structure different from that of embodiment 1, the connection method, the use method, and the operation principle between the structures are repeated, specifically:
referring to fig. 1, fig. 1 is a schematic diagram of the overall structure of the present invention.
A puncture coaxial biopsy needle comprises an outer sleeve 1 and a needle core 2, wherein a silicon cap 3 is connected with the head end of the outer sleeve 1 through internal threads, an outer sleeve seat 4 and a needle core seat 5 are respectively arranged at the tail ends of the outer sleeve 1 and the needle core 2, the outer sleeve seat 4 is connected with the needle core seat 5 through a thread 6, and the length of the thread 6 is equal to the distance from the tip end of the outer sleeve 1 to the tip end of the needle core 2. Preferably, the outer cannula holder 4 and the stylet holder 5 are provided with corresponding threads.
Referring to fig. 2, fig. 2 is a schematic view of an external structure of the outer sleeve.
The outer surface of the outer sleeve 1 is also provided with scale marks 8, and the positions 5cm away from the head end and 10cm away from the outer surface are respectively provided with protruding marks 7. Preferably, the protruding mark 7 is a red mark.
Furthermore, 1 outer lane of outer tube is cylindricly, and the hole is close to head end department and is the bell mouth, and hole diameter is from tail end to head end grow gradually promptly, and the inner wall in bell mouth is fixed with the axially extended deflector, and the deflector is total four to around the axis evenly distributed in bell mouth, the deflector widens gradually along with the grow in bell mouth space, make between four deflectors form with the 2 external diameter assorted guide way of nook closing member.
The use method and the working principle of the embodiment are as follows:
before use, the preparation work is completed according to the conventional operation steps, when the preparation work is ready to start the puncture operation, the needle core 2 is inserted into the outer sleeve 1 with the silicon cap 3, the puncture position is determined, the needle core 2 is punctured into the thoracic cavity according to the preset direction, the tip of the needle core 2 is inserted into the lesion position, then the outer sleeve 1 is rotationally pushed into the lesion position of a patient through the screw thread 6 (at the moment, the length of the screw thread 6 is just equal to the distance between the tip of the outer sleeve 1 and the tip of the needle core 2, the tip of the outer sleeve 1 is inserted into the position which is flush with the tip of the needle core 2), the puncture needle is fixed, the needle core 2 is pulled out, the silicon cap 3 is closed by self, the sampling gun is inserted into the outer sleeve 1 with the silicon cap 3, and the sampling gun is excited to obtain a sample. The sampling gun is pulled out to take out the obtained tissue, in the using process, when the sampling gun is pulled out, the silicon cap 3 is automatically closed to effectively prevent air from entering, and then the sampling gun is inserted into the outer sleeve 1 again to obtain the tissue. The operation is repeated until enough tissue is obtained, the outer sleeve 1 is pulled out, and the treatment such as wound disinfection, aseptic dressing, and the like is carried out.
When the medicine needs to be injected into a patient, the horn hole in the outer sleeve 1 can reduce the speed of the medicine sprayed out from the needle hole, so that the medicine injection device can adapt to the injection resistance and has good tolerance. In addition, the setting of deflector can also effectually realize the radial positioning of nook closing member 2, makes nook closing member 2 insert and can not rock in outer tube 1, ensures the stability between nook closing member 2 and outer tube 1 and can ensure that nook closing member 2 inserts smoothly and takes out outer tube 1.
After the use, the sterilization can be carried out by ethylene oxide, thereby ensuring the sterility in the use process and having simple and convenient application.
It should be noted that the tip of the outer cannula as described herein refers to a length of the tip inserted into the body of the patient, and the tip of the outer cannula refers to the extreme edge of the tip of the outer cannula.
The head end is inserted into the skin of the patient, and the tail end is opposite to the head end.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and additions can be made without departing from the principle of the present invention, and these should also be considered as the protection scope of the present invention.

Claims (6)

1. A puncture coaxial biopsy needle comprises an outer sleeve (1) and a stylet (2), and is characterized in that a silicon cap (3) is connected to the inner thread of the head end of the outer sleeve (1), an outer sleeve seat (4) and a stylet seat (5) are respectively arranged at the tail ends of the outer sleeve (1) and the stylet (2), the outer sleeve seat (4) and the stylet seat (5) are connected through a thread (6), the length of the thread (6) is equal to the distance from the tip end of the outer sleeve (1) to the tip end of the stylet (2), a scale mark (8) is arranged on the outer surface of the outer sleeve (1), and protruding marks (7) are respectively arranged at positions 5cm and 10cm away from the head end on the outer surface; outer tube (1) surface is cylindric, and outer tube (1) hole is close to head end department and is the bell mouth, and hole diameter is from tail end to head end grow gradually promptly, and the inner wall in bell mouth is fixed with the deflector of axial extension, and the deflector is total four to around the axis evenly distributed in bell mouth, the deflector widens gradually along with the grow in bell mouth space, make between four deflectors form with nook closing member (2) external diameter assorted direction passageway.
2. The needle biopsy needle according to claim 1, wherein the tip of the outer cannula (1) is of a conical configuration.
3. The biopsy needle assembly according to claim 1, wherein the core (2) has a cylindrical inner and outer surface and a notched tip.
4. The needle biopsy needle set according to claim 1, wherein the silicon cap (3) is made of a silicon material.
5. The needle biopsy needle according to claim 1, wherein the outer cannula holder (4) and the core holder (5) are provided with corresponding threads.
6. The needle coaxial biopsy needle according to claim 1, wherein the protruding markings (7) are red markings.
CN202121738980.7U 2021-07-29 2021-07-29 Puncture coaxial biopsy needle Active CN215503301U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121738980.7U CN215503301U (en) 2021-07-29 2021-07-29 Puncture coaxial biopsy needle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121738980.7U CN215503301U (en) 2021-07-29 2021-07-29 Puncture coaxial biopsy needle

Publications (1)

Publication Number Publication Date
CN215503301U true CN215503301U (en) 2022-01-14

Family

ID=79788093

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121738980.7U Active CN215503301U (en) 2021-07-29 2021-07-29 Puncture coaxial biopsy needle

Country Status (1)

Country Link
CN (1) CN215503301U (en)

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