CN102784862B - Manufacturing method of puncture needle with adjustable pore diameter and puncture outfit thereof - Google Patents

Abstract

The invention discloses a method for manufacturing a puncture needle with an adjustable aperture, and also discloses a puncture device manufactured by implementing the method for manufacturing a puncture needle with an adjustable aperture, which includes a diameter adjusting device and is formed by curling a sheet metal material. And there is a tube body with a sealed channel in the middle; the method provided by the invention has simple procedures, is easy to implement, and has high production efficiency; the puncture needle provided by the invention is ingenious in design and reasonable in structure, and the tube diameter of the puncture needle can be flexibly controlled by the tube diameter adjusting device. Greatly improve the success rate of puncture, reduce the incidence of operational complications, and ensure the safety and effectiveness of the operation; and because the puncture steps are simplified, the average operation time can be greatly shortened, and the pain of the patient can be reduced. It greatly improves the accuracy and success rate of the operation. In addition, the overall structure is simple and compact, easy to implement, low in cost, and conducive to wide popularization and application.

Description

Adjustable aperture puncture needle manufacturing method and puncture needle

technical field

The invention relates to the technology in the field of medical devices, in particular to a method for manufacturing a puncture needle with adjustable aperture and the puncture needle thereof.

Background technique

At present, central venous puncture has been widely used clinically and is an indispensable treatment measure in clinical practice. It is mainly used for:

1. Quickly open the large vein channel to facilitate the smooth implementation of rescue treatments such as infusion and blood transfusion. It is often used in the rescue treatment of emergency and critical patients, and it is common in the emergency department and rescue treatment.

2. Monitor the pressure of the central vein and guide the input of clinical fluid. Use in shock patients and surgical patients.

3. For patients with large and medium-sized operations, because of long-term fasting, it is used for intravenous nutrition therapy when a long-term fasting is required.

4. In order to place a temporary or permanent pacemaker, it is often used in patients with arrhythmia.

5. Venography or interventional therapy through veins: such as hemodialysis or blood replacement filtration (hemofiltration), placement of venous stents, etc.

6. Cancer patients often receive chemotherapy through the central vein, in order to protect peripheral blood vessels and prevent skin necrosis caused by extravasation of chemotherapy drugs.

It can be seen from the above that puncture needles are widely used in clinical work. The current puncture procedure is usually to use a fine needle to detect the position and then switch to a thicker puncture needle for puncture to improve the success rate of puncture. However, in clinical operations, it often occurs that the fine needle can detect the deep vein and draw back blood, but it is difficult to penetrate the deep vein when the puncture needle is used instead, so multiple punctures are required to succeed, which will greatly increase the trauma and harm to the patient. And such as the incidence of complications such as local hematoma, hemothorax, local infection, sepsis, there are potential safety hazards, it is difficult to guarantee the safety and effectiveness of the operation. At the same time, it is necessary to prepare fine puncture needles and other related medical devices before the operation, resulting in a large amount of waste, which is not conducive to environmental protection and cost control.

Contents of the invention

In view of the above-mentioned deficiencies, one of the objectives of the present invention is to provide a method for manufacturing a puncture needle with adjustable aperture that is simple in manufacturing process, easy to implement, and high in efficiency.

The purpose of the present invention is also to provide a puncture needle with ingenious and reasonable structural design, which can flexibly adjust the aperture of the puncture needle to meet different puncture requirements, has less trauma, and has high safety and effectiveness.

In order to achieve the above object, the present invention provides the technical solution as follows:

A method for manufacturing a puncture needle with adjustable aperture, comprising the steps of:

(1) prepare elastic sheet metal material;

(2) crimping the sheet metal material to form a tube body with a sealed passage in the middle, the diameter of the sealed passage being slightly larger than the maximum aperture of the required puncture needle;

(3) cutting the tube body according to the required length and dimension, and forming a needle point at one end of the tube body;

(4) Prepare a tube diameter adjusting device, sleeve the tube diameter adjusting device on the tube body and position it to obtain a puncture needle with an adjustable aperture.

Described step (4) specifically comprises the following steps:

(4.1) Prepare the adjusting bolt;

(4.2) Prepare the locking needle ferrule: prepare a steel ring with an opening, a first connection part is provided on the opening side of the steel ring, and a screw rod for the adjusting bolt is provided on the first connection part. A through hole through which the steel ring passes; a second connection part is provided on the other side of the opening of the steel ring, and a threaded hole matching the screw rod of the adjusting bolt is provided on the second connection part to obtain a locking pin ferrule;

(4.3) Align the screw rod of the adjusting bolt with the through hole on the first connecting part, and pass through the through hole to cooperate with the threaded hole on the second connecting part to obtain a pipe diameter adjusting device;

(4.4) Align the locking needle ferrule of the pipe diameter adjusting device with the pipe body, and set it on the pipe body, adjust the adjusting bolt so that the locking needle ferrule and the pipe body are an interference fit, realizing For the purpose of positioning and setting, continue to adjust the adjusting bolt until the diameter of the sealing channel of the tube body is consistent with the maximum aperture of the required puncture needle, so as to obtain an adjustable aperture puncture needle.

The pipe diameter adjusting device also includes a scale bar used to display the diameter of the pipe sealing channel, one end of the scale bar is connected to the first connecting part or the second connecting part, and the other end is along the lock. The circumferential direction of the tight needle ferrule extends, and fits with the inner wall of the locking needle ferrule.

It also includes the steps of:

(5) Prepare an elastic plastic tube. One end of the elastic plastic tube is sleeved on the other end of the tube body, and the other end is used to connect with the needle hub. The needle hub is provided with a channel for placing a guide wire. Connected with the pipeline of the elastic plastic tube, a fixed bracket is provided on the steel ring, one end of the fixed bracket is fixed to the steel ring, and the other end is fixed to the needle seat.

It also includes the steps of:

(6) When the hole diameter needs to be reduced, turn the adjusting bolt so that the first connecting part and the second connecting part move closer together, thereby reducing the diameter of the locking pin ferrule, correspondingly forcing the tube body to shrink, and continuing to adjust the Adjust the bolt until the diameter of the sealing channel of the pipe body is reduced to the required aperture;

When the hole diameter needs to be increased, the adjusting bolt is rotated in the opposite direction correspondingly, so that the first connecting part and the second connecting part are moved away from each other, and then the diameter of the locking needle ferrule is increased, and the tube body is crimped on its own. Under the action of the elastic force, it increases correspondingly. Continue to adjust the adjusting bolt until the diameter of the sealing channel of the pipe body increases to the required aperture.

A puncture needle manufactured by implementing the above-mentioned adjustable-aperture puncture needle manufacturing method, which includes a tube diameter adjusting device and a tube body made of sheet metal material curled and with a sealed channel in the middle, and one end of the tube body is set There is a needle point, and the tube diameter adjusting device is sleeved on the tube body, and the tube diameter adjusting device sleeve is an interference fit with the tube body.

The pipe diameter adjusting device includes an adjusting bolt and a locking needle ferrule, the locking needle ferrule includes a steel ring with an opening, a first connecting portion is provided on one side of the opening of the steel ring, and the first connecting portion There is a through hole for the screw rod of the adjusting bolt to pass through on the part; the other side of the opening of the steel ring is provided with a second connecting part, and the second connecting part is provided with a screw rod and an adapter of the adjusting bolt. A threaded hole is provided, and the screw rod of the adjusting bolt passes through the through hole on the first connecting part and is screwed into the threaded hole on the second connecting part.

The pipe diameter adjusting device also includes a scale bar used to display the diameter of the pipe sealing channel, one end of the scale bar is connected to the first connecting part or the second connecting part, and the other end is along the lock. The circumferential direction of the tight needle ferrule extends, and fits with the inner wall of the locking needle ferrule.

The steel ring and the first connection part are in an integral connection structure, and the steel ring and the second connection part are in an integral connection structure.

It also includes an elastic plastic tube, one end of the elastic plastic tube is sleeved on the other end of the tube body, the other end of the elastic plastic tube is used to connect with the needle hub, and the needle hub is provided with a guide wire The channel is connected with the pipeline of the elastic plastic tube, and a fixing bracket is provided on the steel ring, and one end of the fixing bracket is fixed to the steel ring, and the other end is fixed to the needle seat.

The beneficial effects of the present invention are: the method provided by the present invention has simple procedures, is easy to realize, and has high production efficiency; Puncture requirements, a wide range of applications; when puncturing, first adjust the diameter of the puncture needle to achieve the effect of a fine needle, after the puncture position is accurate, adjust the diameter adjustment device to increase the diameter of the puncture needle, That is to achieve the effect of a thick needle, greatly improving the success rate of puncture, avoiding the phenomenon that a thin needle can reach the deep vein and draw back blood, but it is difficult to penetrate the deep vein when the puncture needle is used for puncture, and at the same time reduce the complications of the operation It is especially suitable for the puncture of patients with abnormal blood coagulation function, which can effectively improve the safety of the operation and reduce the occurrence of medical accidents; and because the puncture steps are simplified, the average operation time can be greatly shortened, It reduces the pain of the patient, and because of the simple operation, it reduces the requirements for the doctor's puncture technique, and greatly improves the accuracy and success rate of the operation. In addition, the overall structure is simple and compact, easy to implement, low in cost, and conducive to wide application. At the same time, the use of the present invention reduces the use of at least one disposable syringe for each operation, which is beneficial to cost control and environmental protection.

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Description of drawings

Fig. 1 is the schematic diagram of the front view structure of the first embodiment of the present invention;

Fig. 2 is a schematic diagram of the cross-sectional structure of A-A of Fig. 1;

Fig. 3 is a front structural schematic view of the second embodiment of the present invention;

FIG. 4 is a schematic diagram of the cross-sectional structure along line A-A of FIG. 3 .

Detailed ways

The first embodiment: referring to Fig. 1 and Fig. 2, an embodiment of the present invention provides a method for manufacturing a puncture needle with adjustable aperture, which includes the following steps:

(1) prepare elastic sheet metal material;

(2) crimping the sheet metal material to form a tube body 1 with a sealing channel in the middle, the diameter of the sealing channel is slightly larger than the maximum aperture of the required puncture needle;

(3) cutting the tube body 1 according to the required length and dimension, and forming a needle point at one end of the tube body 1;

(4) Prepare the tube diameter adjusting device 2 , set the tube diameter adjusting device 2 on the tube body 1 and position it to obtain a puncture needle with an adjustable aperture.

Described step (4) specifically comprises the following steps:

(4.1) Prepare adjusting bolt 21;

(4.2) Prepare the locking needle ferrule 22: prepare a steel ring with an opening, a first connecting portion 23 is provided on one side of the opening of the steel ring, and a first connecting portion 23 for the adjustment bolt is provided. The through hole through which the screw rod of 21 passes; the other side of the opening of the steel ring is provided with a second connecting portion 24, on which a threaded rod that is matched with the screw rod of the adjusting bolt 21 is provided on the second connecting portion 24 Hole, make locking pin ferrule 22;

(4.3) Align the screw rod of the adjusting bolt 21 with the through hole on the first connecting part 23, and pass through the through hole to cooperate with the threaded hole on the second connecting part 24 to obtain the pipe diameter adjusting device 2 ;

(4.4) Align the locking needle ferrule 22 of the pipe diameter adjusting device 2 with the pipe body 1, and set it on the pipe body 1, adjust the adjusting bolt 21 to make the locking needle ferrule 22 and the pipe body 1. For interference fit, to achieve the purpose of positioning and setting, continue to adjust the adjusting bolt 21 until the diameter of the sealing channel of the tube body 1 is consistent with the maximum aperture of the required puncture needle, and an adjustable aperture puncture needle is obtained.

The pipe diameter adjusting device 2 also includes a scale bar 3 for displaying the diameter of the sealed channel of the pipe body 1, one end of the scale bar 3 is connected to the first connecting part 23 or the second connecting part 24, The other end extends along the circumferential direction of the locking needle ferrule 22 and is attached to the inner wall of the locking needle ferrule 22 .

It also includes the steps of:

(5) prepare the elastic plastic tube 4, one end of the elastic plastic tube 4 is sleeved on the other end of the tube body 1, and the other end is used to connect with the needle hub 5, and the needle hub 5 is provided with a guide wire The channel 6 communicates with the pipeline of the elastic plastic tube 4 .

It also includes the steps of:

(6) When the aperture needs to be reduced, turn the adjusting bolt 21 to make the first connecting portion 23 and the second connecting portion 24 move closer together, thereby reducing the diameter of the locking needle ferrule 22 and correspondingly forcing the pipe body 1 Narrow down, continue to adjust the adjusting bolt 21 until the diameter of the sealing channel of the pipe body 1 is reduced to the required aperture;

When the hole diameter needs to be increased, the adjusting bolt 21 is rotated in the opposite direction accordingly, so that the first connecting part 23 and the second connecting part 24 move away from each other, thereby increasing the diameter of the locking needle ferrule 22, and the tube body 1 increases correspondingly under the action of its own crimping elastic force, and continues to adjust the adjusting bolt 21 until the diameter of the sealing passage of the pipe body 1 increases to the required hole diameter.

A puncture needle manufactured by implementing the above method for manufacturing a puncture needle with adjustable aperture, which includes a tube diameter adjusting device 2 and a tube body 1 that is curled from a sheet metal material and has a sealed channel in the middle, the tube body 1 One end is provided with a needle point 11, and the pipe diameter adjusting device 2 is sleeved on the pipe body 1, and the pipe diameter adjusting device 2 and the pipe body 1 are in an interference fit.

The pipe diameter adjusting device 2 includes an adjusting bolt 21 and a locking needle ferrule 22. The locking needle ferrule 22 includes a steel ring with an opening, and a first connecting portion 23 is provided on one side of the opening of the steel ring. , the first connecting portion 23 is provided with a through hole for the screw rod of the adjusting bolt 21 to pass through; the other side of the opening of the steel ring is provided with a second connecting portion 24, and the second connecting portion 24 is provided with a The threaded rod of the adjusting bolt 21 is matched with the threaded hole, and the threaded rod of the adjusting bolt 21 passes through the through hole on the first connecting portion 23 and is screwed into the threaded hole on the second connecting portion 24 .

The pipe diameter adjusting device 2 also includes a scale bar 3 for displaying the diameter of the sealed channel of the pipe body 1, one end of the scale bar 3 is connected to the first connecting part 23 or the second connecting part 24, The other end extends along the circumferential direction of the locking needle ferrule 22 and is attached to the inner wall of the locking needle ferrule 22 .

The connection between the steel ring and the first connecting portion 23 is an integral structure.

The steel ring and the second connecting portion 24 are integrally connected.

It also includes an elastic plastic tube 4, one end of the elastic plastic tube 4 is sleeved on the other end of the tube body 1, the other end of the elastic plastic tube 4 is used to connect with the needle hub 5, on the needle hub 5 A channel 6 for placing a guide wire is provided, and the channel 6 communicates with the pipeline of the elastic plastic tube 4 .

The second embodiment: see Fig. 3 and Fig. 4, it is basically the same as the first embodiment, the difference is that the extension direction of the first connecting part 23 is tangent to the steel ring, that is, the first connecting part 23 deviates from the pipe body 1 The central position of the adjustment bolt 21 is staggered from the pipe body 1, and the head of the adjustment bolt 21 can be designed larger to facilitate adjustment and use. In addition, a fixed bracket 7 is arranged on the steel ring, and one end of the fixed bracket 7 is fixed with the steel ring, and the other end is fixed with the needle holder 5 . Avoid swinging from side to side when puncturing, improving the safety and effectiveness of the operation.

The method provided by the invention has simple procedures, is easy to implement, and has high production efficiency;

The puncture needle provided by the present invention is ingenious in design and reasonable in structure, and the diameter of the puncture needle can be flexibly controlled by the diameter adjusting device 2 to meet different puncture requirements and has a wide range of applications;

Before puncture, determine the position of the puncture point. After positioning, local disinfection, laying sheets, connect a 10ml syringe through the needle seat 5, and adjust the diameter adjustment device 2 to adjust the diameter of the puncture needle to the diameter of the fine hole, that is, to reach the diameter of the fine needle. Effect, extract local anesthetic (lidocaine), insert the needle along the puncture point after local infiltration anesthesia, probe deep into the deep vein with negative pressure, after the deep vein is probed (if the deep vein cannot be probed once, then after a little Adjust the puncture direction or depth), keep the position and direction of the puncture needle unchanged, directly adjust the tube diameter adjustment device 2 to adjust the aperture of the puncture needle to a thick aperture, that is, to achieve the effect of a thick needle, then insert the guide wire, withdraw the needle, and The guidewire was inserted into a central venous catheter, a 15 cm long fixed catheter. That is to say, the operation process is completed. Greatly improve the success rate of puncture, avoid the phenomenon that the fine needle can reach the deep vein and draw back blood, but it is difficult to penetrate the deep vein when the puncture needle is used for puncture, and at the same time reduce the complications of the operation, ensure the safety and Effectiveness, effectively improve the safety of puncture surgery, reduce the occurrence of medical accidents; and because it is a successful puncture, it can greatly shorten the operation time, reduce the pain of patients, simple operation, low cost, reduce the dependence on doctors' skills, and improve the operation efficiency. accuracy and success rate.

As described in the above embodiments of the present invention, other trocars obtained by adopting the same or similar structures and their manufacturing methods are all within the protection scope of the present invention.

Claims (8)

1. an adjustable aperture puncture needle manufacture method, is characterized in that, it comprises the steps:

(1) preparation has flexible flaky metallic material;

(2) flaky metallic material is curled into the body in the middle part of in the of with seal channel, the diameter of sealing passage is slightly larger than the maximum diameter of hole of required puncture needle;

(3) according to required length dimension, this body is cut, and make this body one end form needle point;

(4) prepare pipe diameter adjusting device, this pipe diameter adjusting device to be set on described body and to locate setting, obtained adjustable aperture puncture needle;

Described step (4) specifically comprises the steps:

(4.1) adjusting bolt is prepared;

(4.2) preparation locking needle guard circle: preparation one has the steel ring of opening, is provided with the first connecting portion in the opening side of this steel ring, and this first connecting portion is provided with a through hole passed for the screw rod of described adjusting bolt; Be provided with the second connecting portion at the opening opposite side of this steel ring, this second connecting portion is provided with a screwed hole of joining with adaptation with the screw rod of described adjusting bolt, obtained locking needle guard circle;

(4.3) screw rod of adjusting bolt is aimed at the through hole on described first connecting portion, and the corresponding threaded holes run through on this through hole and described second connecting portion closes, obtained pipe diameter adjusting device;

(4.4) by body described in the locking pin ferrule alignment of pipe diameter adjusting device, and be set on this body, described adjusting bolt is regulated to make locking needle guard circle and body be interference fit, realize the object that location is arranged, continue to regulate described adjusting bolt until the diameter of seal channel of body is consistent with the maximum diameter of hole of required puncture needle, obtain adjustable aperture puncture needle.

2. adjustable aperture puncture needle manufacture method according to claim 1, it is characterized in that, described pipe diameter adjusting device also comprises a scale strip being used for the diameter dimension showing described body seal channel, this scale strip one end is connected on described first connecting portion or the second connecting portion, the other end extends along the circumferential direction of described locking needle guard circle, and fits with the inwall of this locking needle guard circle.

3. adjustable aperture puncture needle manufacture method according to claim 1, it is characterized in that, it is further comprising the steps of:

(5) Elastic plastic-rubber pipe is prepared, this Elastic plastic-rubber pipe one end is socketed in the described body other end, the other end is used for being connected with needle stand, this needle stand is provided with the passage that is used for placing seal wire, this passage is connected with the pipeline of described Elastic plastic-rubber pipe, steel ring is provided with a fixed support, is fixed in this fixed support one end and steel ring, the other end and described needle stand fix.

4. adjustable aperture puncture needle manufacture method according to claim 1, it is characterized in that, it is further comprising the steps of:

(6) when needing reduced bore, rotate described adjusting bolt, the first connecting portion and the second connecting portion is made to do relatively to draw close action, and then make the reduced of locking needle guard circle, the corresponding body that forces reduces, and continues the described adjusting bolt of adjustment until the diameter dimension of seal channel of body is contracted to required aperture;

When needing hole diameter enlargement, then respective opposed rotates described adjusting bolt, first connecting portion and the second connecting portion are done relative to action, and then the diameter of locking needle guard circle is increased, body corresponding increase under the curling elastic force effect of self, continues the described adjusting bolt of adjustment until the diameter dimension of seal channel of body increases to required aperture.

5. one kind implements the claims the obtained puncture needle of adjustable aperture puncture needle manufacture method described in 1, it is characterized in that, it comprises a pipe diameter adjusting device and and adopts that flaky metallic material is curling forms, and middle part has the body of seal channel, this body one end is provided with needle point, described pipe diameter adjusting device is set on described body, and this pipe diameter adjusting device cover is interference fit with body; Described pipe diameter adjusting device comprises an adjusting bolt and a locking needle guard circle, this locking needle guard circle comprises the steel ring that has opening, the opening side of this steel ring is provided with the first connecting portion, and this first connecting portion is provided with a through hole passed for the screw rod of described adjusting bolt; The opening opposite side of this steel ring is provided with the second connecting portion, this second connecting portion is provided with a screwed hole of joining with adaptation with the screw rod of described adjusting bolt, and the screw rod of described adjusting bolt runs through the through hole on described first connecting portion and screws in the screwed hole on described second connecting portion.

6. puncture needle according to claim 5, it is characterized in that, described pipe diameter adjusting device also comprises a scale strip being used for the diameter dimension showing described body seal channel, this scale strip one end is connected on described first connecting portion or the second connecting portion, the other end extends along the circumferential direction of described locking needle guard circle, and fits with the inwall of this locking needle guard circle.

7. puncture needle according to claim 5, is characterized in that, is integrated syndeton between described steel ring and the first connecting portion, and described steel ring and the second connecting portion are integrated syndeton.

8. puncture needle according to claim 5, it is characterized in that, it also comprises an Elastic plastic-rubber pipe, one end of this Elastic plastic-rubber pipe is socketed in the described body other end, and the other end of this Elastic plastic-rubber pipe is used for being connected with needle stand, and this needle stand is provided with the passage that is used for placing seal wire, this passage is connected with the pipeline of described Elastic plastic-rubber pipe, described steel ring is provided with a fixed support, and this fixed support one end and steel ring fix, and the other end and described needle stand fix.