CN215349309U

CN215349309U - Venipuncture assembly

Info

Publication number: CN215349309U
Application number: CN202023137617.8U
Authority: CN
Inventors: 肖娓珠
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-12-31
Anticipated expiration: 2030-12-23

Abstract

The utility model discloses a venipuncture assembly, which comprises a guide puncture needle and a catheter, wherein the guide puncture needle is inserted into the catheter and comprises a needle body and a guide wire which are integrally arranged, the front end of the needle body is set to be a tip, and the rear end of the needle body is connected with the front end of the guide wire; the front end of the catheter is a reducing end, and the reducing end is wrapped outside the needle body. Compared with the prior art, need not put into seal wire and pipe again, easy operation, convenience, ordinary nurse can accomplish the operation to, in actual clinical operation, have the guide pjncture needle to support because of the pipe, make the difficult roll-off blood vessel of pipe and damage the vascular wall, reduced puncture failure rate and patient's potential safety hazard.

Description

Venipuncture assembly

Technical Field

The utility model relates to the field of medical instruments, in particular to a venipuncture assembly.

Background

Currently, the puncture of the vein catheter mainly adopts the Seldinger technique (percutaneous puncture technique), and the puncture technique needs to be completed step by step, and the specific process is as follows: the puncture needle penetrates into a vein, the guide wire is placed in a needle cavity of the puncture needle, then the puncture needle is pulled out, the guide wire is fixed and placed into a catheter expansion sheath along the guide wire, the guide wire is pulled out, and then the catheter is sent from the catheter expansion sheath. This kind of puncture technique needs the substep operation, and the operation is comparatively complicated, and needs the specialist nurse through professional training to operate clinically to, put into the guide wire after the puncture is successful and put into the in-process of pipe expansion sheath along the guide wire and lead to the needle point roll-off target blood vessel easily and lead to putting the pipe failure, or the pipe expansion sheath harms the vascular wall and outside the roll-off blood vessel, in actual clinical operation, increased puncture failure rate and patient's potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a venipuncture assembly, wherein a needle body and a guide wire are integrally arranged, a guide wire and the guide wire are not required to be arranged again after a catheter is sleeved outside the guide wire, the operation is simple, an ordinary nurse can operate the venipuncture assembly, and meanwhile, the puncture failure rate and the potential safety hazard of a patient are reduced in the actual clinical operation.

In order to achieve the above purpose, the solution of the utility model is as follows:

a venipuncture assembly characterized by: the puncture needle comprises a catheter and a guide puncture needle, wherein the guide puncture needle is inserted into the catheter, the guide puncture needle comprises a needle body and a guide wire which are integrally arranged, the front end of the needle body is set to be a tip, and the rear end of the needle body is connected with the front end of the guide wire; the front end of the catheter is a reducing end, and the reducing end is wrapped outside the needle body.

The device also comprises a pushing piece used for pushing the catheter to move or pushing the catheter and the guide puncture needle to move together, and the pushing piece is detachably arranged outside the catheter.

The pushing piece comprises an elastic sleeve and two needle holding lugs which are arranged in an opposite way, the elastic sleeve is provided with a slot for being installed outside the catheter or being detached from the catheter, and the two needle holding lugs are respectively arranged at two opposite side edges of the elastic sleeve; wherein, the two needle holding lugs are all parts made of elastic materials.

The guide puncture needle is provided with an access hole, the rear section of the catheter is a transparent section for observing return blood, or the catheter is a transparent tube made of transparent materials.

And a butterfly wing for fixing is arranged between the conduit and the transparent section, and mounting holes are respectively formed in two wing pieces of the butterfly wing.

The guide wire assembly comprises a connecting body and a connecting sleeve connected with the connecting body, a liquid channel is formed in the connecting block, and the connecting sleeve is provided with a liquid injection cavity communicated with the liquid channel; the liquid assembly comprises an extension tube communicated with the liquid injection chamber and a piston needle cylinder arranged on the extension tube.

The transparent section and/or the extension pipe is/are sleeved with a thumb clamp for clamping.

The thumb clamp comprises a triangular rotating body and a C-shaped fixing body, wherein the short side of the rotating body is arranged at the first end of the fixing body in a rotatable mode, a clamping block is arranged at the position, facing the side wall of the rotating body, of the first end of the fixing body, the clamping block corresponds to the first side angle of the short side, a through hole is formed in the second end of the fixing body, a channel is formed between the first side angle and the second end of the fixing body, and the transparent section sequentially penetrates through the through hole and the channel;

when the second corner on the short side is separated from the second end of the fixing body, the channel is formed between the first corner of the rotating body and the clamping block; the second corner of minor lateral with during the mutual butt of the second end of the fixed body, the first corner of rotor with the mutual butt of fixture block, the passageway is the closed condition.

The rotor with the stationary body is the working of plastics that adopt the plastics material to make.

After adopting the structure, the utility model has the following beneficial effects:

1. the needle body and the guide wire are integrally arranged, the catheter is sleeved outside the guide puncture needle, in the operation process, the needle body is firstly used for penetrating into a vein, then the catheter is placed into the vein along the guide puncture needle, then a part of the guide puncture needle is pulled out, so that the needle body is pulled back into the catheter, then the catheter and the guide puncture needle are pushed to be placed into the vein, and finally the guide puncture needle is pulled out; like this, need not put into seal wire and pipe again, easy operation, convenience, ordinary nurse can accomplish the operation to, in actual clinical operation, have the guide pjncture needle to carry out direct puncture and support because of the pipe, need not to operate step by step, make the difficult roll-off blood vessel of pipe and damage the vascular wall, reduced puncture failure rate and patient's potential safety hazard.

2. The pushing piece is arranged, on one hand, the elastic sleeve is adopted to clamp the catheter and the guide puncture needle, on the other hand, a nurse can push the catheter and the guide puncture needle to move together by holding the needle lugs during the operation process, so that the operation is convenient; and the push piece can be detachably arranged and can be placed at any position of the catheter, so that a nurse can install the push piece at a proper position of the catheter according to actual requirements, for example, the puncture can be performed by blind puncture under the elbow vein and puncture by visualization technologies such as ultrasonic guidance on the elbow, and the application range is particularly wide.

3. The setting of transparent section on the pipe, when this is using novel, make things convenient for the nurse to observe the condition of returning blood through transparent section to ensure the unblocked of pipe.

4. The thumb clamp is arranged to prevent blood return and blood overflow in the process of puncture operation, when a patient needs to pause transfusion, the thumb clamp is used to clamp the transparent section, so that transfusion can be interrupted, and the transparent section can be clamped when transfusion is finished to prevent air embolism, so that the operation is flexible and convenient.

5. The arrangement of the guide wire component is convenient for the positioning of the catheter, and the subsequent operation is convenient, thereby preventing the pollution caused by the overflow of blood.

Drawings

FIG. 1 is a schematic view of the intravenous puncture assembly of the present invention;

FIG. 2 is a schematic view of the introducer needle of the present invention;

FIG. 3 is a schematic view of the structure of the pusher member of the present invention;

FIG. 4 is a schematic view of the thumb clamp of the present invention.

In the figure:

100-guiding puncture needle; 11-a needle body;

12-a guide wire; 13-access holes;

200-a catheter; 21-reducing end;

22-a transparent segment; 300-a pusher;

31-an elastic sleeve; 311-slotting;

32-a needle-holding lug; 40-butterfly wing;

41-cylinder body; 42-a fin;

50-thumb clamp; 51-a rotor;

52-a stationary body; 521-a fixture block;

522-punching; 523-channel;

53-mounting member.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.

An intravenous puncture assembly, as shown in fig. 1-4, comprises an introducer needle 100 and a catheter 200, wherein the introducer needle 100 is provided with a smooth access hole, the introducer needle 100 is inserted into the catheter 200 so that the introducer needle 100 can move along the catheter 200 under the action of external force, and the length of the introducer needle 100 is longer than that of the catheter 200 so as to facilitate the subsequent operation of the introducer needle 100 relative to the catheter 200. Wherein, the guide puncture needle 100 and the catheter 200 are both hollow structures.

The guide puncture needle 100 includes a needle body 11 and a guide wire 12, the needle body 11 and the guide wire 12 are connected to each other, and the needle body 11 and the guide wire 12 are integrally provided.

In this embodiment, one end of the needle body 11 is the front end of the introducer needle 100, and the other end is the rear end; the front end of the needle body 11 is set to be a tip end for inserting into a vein, the rear end of the needle body is connected with the front end of the guide wire 12, the diameter of the needle body 11 is larger than that of the guide wire 12, and the access hole is opened at the middle section of the needle body 11, the rear section of the needle body 11 or the rear section of the needle body 11 close to the position of the guide wire 12 for blood to enter the catheter 200. The needle body 11 is a medical needle widely used in hospitals, and the guide wire 12 is a guide wire widely used in puncture procedures, wherein the medical needle can be an indwelling needle which is widely used in hospitals and has a high pressure resistance function and/or a CT (computed tomography) enhanced radiography function, and the high pressure is greater than or equal to 300 pa.

The front end of the conduit 200 is set as a reducing end 21, in this embodiment, the end where the reducing end 21 is located is the front end of the conduit 200, and the other end is the rear end; the reducing end 21 is coated outside the needle body 11, and the joint of the reducing end 21 and the catheter 200 is in smooth transition, wherein the catheter 200 is a polyurethane catheter widely used in the existing puncture process and can also be other medical catheters. When the tip of the needle body 11 is inserted into a vein, the reduced diameter end 21 is used to place the catheter 200 into the vein.

Preferably, the diameter of the catheter 200 becomes gradually larger from front to back, and the front end of the catheter is thinner and the rear end of the catheter is thicker, so that the guide wire 12 does not damage the inner wall of the catheter 100 when the needle is withdrawn after the puncture is successful; that is, the diameter of the reduced diameter end 21 of the catheter gradually increases from front to back, and the junction between the reduced diameter end 21 and the catheter 200 is smoothly transited, so as to smoothly guide the catheter 200 to be placed in the vein.

Further, the puncture needle device also comprises a pushing piece 300, the pushing piece 300 is detachably arranged outside the catheter 200, and the pushing piece 300 is used for driving the catheter 200 and the puncture needle 100 to move together.

The pushing member 300 includes an elastic sleeve 31 and two needle holding lugs 32 disposed on the back, the size and shape of the elastic sleeve 31 are matched with those of the catheter 200, a slit 311 is axially disposed on the elastic sleeve 31, the slit 311 extends to the two ends of the elastic sleeve 31, and the two needle holding lugs 32 are disposed on the two opposite sides of the elastic sleeve 31 respectively, so that the two needle holding lugs 32 are disposed on the two sides of the slit 311. Wherein the pushing member 300 is a component made of the same material as the catheter 200, and accordingly, both needle holding lugs have elasticity.

In this embodiment, the elastic sheath 31 and the two needle holding lugs 32 are formed as an integral structure.

When the pushing member 300 is installed, the elastic sleeve 31 expands the slit 311 through the elastic deformation of the elastic sleeve, so that the elastic sleeve 31 is sleeved outside the guide tube 200, and the elastic sleeve 31 is tightly sleeved outside the guide tube 200 after the external force is removed and the elastic sleeve is restored to be deformed; when the pushing member 300 is detached, the slit 311 of the elastic sheath 31 is opened by an external force, and the catheter 200 is passed through the opened slit 311 to detach the elastic sheath 31 from the catheter 200.

In the present invention, when the two needle holding lugs 32 are pinched and the two needle holding lugs 32 are moved toward each other, the two needle holding lugs 32 are disposed on both sides of the slit 311, so that the two opposite side edges of the elastic sheath 31 are gradually moved toward each other, and when the two needle holding lugs 32 are overlapped with each other, the two opposite side edges of the elastic sheath 32 are also adhered to each other, so that the elastic sheath 32 forms a closed cylindrical structure to be wrapped outside the catheter 200, thereby clamping the catheter 200 and the guide puncture needle 100. When a forward or backward external force is applied to both needle-holding lugs 32, both needle-holding lugs 32 move to bring the catheter 200 and the introducer needle 100 together; however, when the rear end of the introducer needle 100 receives a rearward external force while the driver catheter 200 is moving forward, the introducer needle 100 is pulled out from the catheter 200 from the front to the rear.

Preferably, the rear section of the catheter 200 is provided with a transparent section 22 for a nurse to observe the condition of blood return and the like, and can be disposed of in time when there is an abnormal problem. In this embodiment, the transparent segment 22 is made of a known material, such as medical transparent plastic. Further, instead of providing the entire section of the duct 200 as a transparent section, or providing the middle rear section of the duct 200 as a transparent section, it is not limited to providing the rear section of the duct 200 as a transparent section.

Preferably, the butterfly wing 40 is fixedly mounted at the joint of the conduit 200 and the transparent section 22, the butterfly wing 40 includes a cylinder 41 and two wings 42, the two wings 42 are respectively disposed at two sides of the cylinder 41, and the two wings 42 are provided with mounting holes for mounting, after the conduit 200 is placed in a dead space, the butterfly wing 40 fixes the conduit 200 through the two mounting holes thereon, for example, the butterfly wing is fixed in a snap fit with a snout button in a hospital, so as to prevent the conduit 200 from shaking or extubating during infusion.

In addition, the present embodiment further includes a transparent tube, that is, the transparent section 22 is no longer present at the rear section of the catheter 200, and for unfolding, the butterfly wing 40 is fixedly installed at the rear end of the catheter 200, the catheter 200 and the transparent tube are respectively inserted into two ends of the cylinder 41, and the catheter 200 and the transparent tube are communicated with each other. Wherein the guidewire 12 is passed through the transparent tube and the catheter 200 in sequence.

Preferably, a thumb clip 50 is provided around the transparent segment 22, the thumb clip 50 being used to hold the transparent segment 22, the transparent segment 22 no longer being in communication with both sides of the thumb clip 50. The thumb clamp 50 is a common clamping piece in the medical field, and the thumb clamp 50 is a plastic piece made of plastic material; for example, in the present embodiment, the thumb clamp 50 includes a triangular rotating body 51, a C-shaped fixing body 52 and two mounting pieces 53 disposed on two opposite sides of the rotating body 51, the two mounting pieces 53 are respectively mounted on two sides of the rotating body 51, an annular hole is inwardly disposed at a short side of the rotating body 51, a positioning pin is inserted into the annular hole, two ends of the positioning pin are respectively fixedly mounted on the two mounting pieces 53, so that the rotating body 51 rotates relative to the positioning pin, a first end of the fixing body 52 is fixedly mounted between the two mounting pieces 53, a mouth of the fixing body 52 faces the rotating body 51, a through hole 522 is disposed at a position close to a second end of the fixing body 52, a latch 521 is convexly disposed at a position of the first end of the fixing body 52 facing a side wall of the rotating body 51, and the latch 521 corresponds to a first corner of the rotating body 51; and, a second corner of the rotating body 51 and a side wall of the second end of the fixed body 52 can be abutted against or separated from each other during the rotation of the rotating body 51, and in the present embodiment, the second corner and the first corner are at both sides of the same side wall. Wherein a channel 523 is provided between the first corner and the second end of the fixing body 52, and the transparent segment passes through the through hole 522 and the channel 523 in sequence.

In the rotating process of the rotating body 51, when the second corner of the rotating body 51 is clamped on the fixing body 52, the first corner of the rotating body and the fixture block 521 are abutted against each other, so that the transparent section 22 is clamped under the matching of the first corner and the fixture block 521, the channel 523 is in a closed state, and the transparent section 22 is interrupted; when the second corner of the rotating body 51 and the first end of the fixing body 52 are separated from each other, the aforementioned space is formed between the first corner of the rotating body 51 and the latch 521, so that the transparent section 22 passes through, and the transparent section 22 is ensured to be unobstructed.

The utility model relates to a venipuncture assembly, which comprises the following specific operation processes: firstly, the needle body 11 is drawn out, the inclined plane of the needle body 11 extends out of the front end of the catheter 200, the extending distance of the needle body 11 is Leyi (the same as that of the existing indwelling needle used in clinic), then the needle body 11 is inserted into the vein, after blood return occurs, the needle body 11 and the catheter are sent for a certain distance (such as 0.3-0.5cm), then the catheter 200 is pushed to move along the needle body 11 so that the front end of the catheter 200 is placed into the vein, then the extending part of the needle body 11 is retracted into the catheter 200, then the two needle holding lugs 32 are pinched to move forwards so as to drive the guide puncture needle 100 and the catheter 200 to be placed into the vein, and after the required infusion position is reached, the rear end of the guide puncture needle 100 is drawn out to be completely drawn out.

In addition, during the operation, when the front end of the catheter 200 is placed into the vein and the part of the needle body 11 extending out is retracted into the catheter, the pushing piece is used to continuously place the catheter 200 into the vein, and the force is applied to the rear end of the guide puncture needle 100 to slowly pull the guide puncture needle 100 out of the catheter 200, during the process, the guide puncture needle 100 does not move along with the catheter 200 because the rear end of the guide puncture needle 100 is subjected to the external force relative to the catheter 200 and the catheter 200 is subjected to the forward pushing force.

As a preferable mode, the utility model further comprises a guide wire assembly, wherein the guide wire assembly comprises a connecting body and a liquid assembly, the connecting body comprises a connecting block and a connecting sleeve connected with the connecting block, a liquid channel is formed in the connecting block, and the connecting sleeve is provided with a liquid injection cavity communicated with the liquid channel; the liquid assembly comprises an extension tube communicated with the liquid injection chamber and a piston needle cylinder arranged on the extension tube; when the catheter 200 is installed, the front end of the catheter 200 passes through the liquid channel and the main liquid chamber in sequence, wherein the guide wire assembly is a known assembly, such as a medical guide wire assembly with the application number "20182045555.0" applied by the applicant, the infusion tube is the aforementioned extension tube, the connecting block is spirally connected with the connecting sleeve, and the free end of the connecting sleeve is blocked with a plunger for positioning the guide wire. Thus, the guide wire assembly is adopted to position the catheter and the guide wire 12, and subsequent operation is convenient.

The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made within the scope of the claims of the present invention should fall within the scope of the claims of the present invention.

Claims

1. A venipuncture assembly characterized by: the puncture needle comprises a catheter and a guide puncture needle, wherein the guide puncture needle is inserted into the catheter, the guide puncture needle comprises a needle body and a guide wire which are integrally arranged, the front end of the needle body is set to be a tip, and the rear end of the needle body is connected with the front end of the guide wire; the front end of the catheter is a reducing end, and the reducing end is wrapped outside the needle body.

2. A venipuncture assembly as set forth in claim 1, wherein: the device also comprises a pushing piece used for pushing the catheter to move or pushing the catheter and the guide puncture needle to move together, and the pushing piece is detachably arranged outside the catheter.

3. A venipuncture assembly as set forth in claim 2, wherein: the pushing piece comprises an elastic sleeve and two needle holding lugs which are arranged in an opposite way, the elastic sleeve is provided with a slot for being installed outside the catheter or being detached from the catheter, and the two needle holding lugs are respectively arranged at two opposite side edges of the elastic sleeve; wherein, the two needle holding lugs are all parts made of elastic materials.

4. A venipuncture assembly as set forth in claim 1, wherein: the guide puncture needle is provided with an access hole, the rear section of the catheter is a transparent section for observing return blood, or the catheter is a transparent tube made of transparent materials.

5. A venipuncture assembly as set forth in claim 4, wherein: and a butterfly wing for fixing is arranged between the conduit and the transparent section, and mounting holes are respectively formed in two wing pieces of the butterfly wing.

6. A venipuncture assembly as set forth in claim 4, wherein: the guide wire assembly comprises a connecting body and a connecting sleeve connected with the connecting body, a liquid channel is formed in the connecting block, and the connecting sleeve is provided with a liquid injection cavity communicated with the liquid channel; the liquid assembly comprises an extension tube communicated with the liquid injection chamber and a piston needle cylinder arranged on the extension tube.

7. A venipuncture assembly as set forth in claim 6, wherein: the transparent section and/or the extension pipe is/are sleeved with a thumb clamp for clamping.

8. A venipuncture assembly as set forth in claim 7, wherein: the thumb clamp comprises a triangular rotating body and a C-shaped fixing body, wherein the short side of the rotating body is arranged at the first end of the fixing body in a rotatable mode, a clamping block is arranged at the position, facing the side wall of the rotating body, of the first end of the fixing body, the clamping block corresponds to the first side angle of the short side, a through hole is formed in the second end of the fixing body, a channel is formed between the first side angle and the second end of the fixing body, and the transparent section sequentially penetrates through the through hole and the channel;

9. A venipuncture assembly as set forth in claim 8, wherein: the rotor with the stationary body is the working of plastics that adopt the plastics material to make.