CN115253033A

CN115253033A - High-strength catheter sheath group

Info

Publication number: CN115253033A
Application number: CN202210912486.0A
Authority: CN
Inventors: 宋福生; 刘津莹; 张艳琴; 董建龙; 谢宝川; 乔卞卞
Original assignee: Hebei Kangyu Medical Instrument Co ltd
Current assignee: Hebei Kangyu Medical Instrument Co ltd
Priority date: 2022-07-30
Filing date: 2022-07-30
Publication date: 2022-11-01
Anticipated expiration: 2042-07-30
Also published as: CN115253033B

Abstract

The invention discloses a high-strength catheter sheath set, which comprises a needle base and a needle head fixedly connected with one end of the needle base, wherein a visual splash-proof assembly is arranged at the other end of the needle base; the visual splash-proof assembly comprises a capsule body for abutting the needle seat. According to the high-strength catheter sheath set, the capsule body is arranged, so that splashed blood after the needle head is inserted into a blood vessel can be completely blocked, the blood splashing is effectively avoided, the trouble of subsequent cleaning of an operation site by medical personnel is reduced to a certain extent, and whether puncture is successful or not can be observed through the visual transparent capsule body.

Description

High-strength catheter sheath group

Technical Field

The invention relates to the technical field of medical treatment, in particular to a high-strength catheter sheath group.

Background

The known conduit sheath group consists of a conduit sheath, an expander, a puncture needle and a guide wire, when the conduit sheath group is used for carrying out interventional therapy on a human blood vessel, a small opening is cut on the skin of the human body by a scalpel, then the section of the puncture needle faces upwards, the puncture needle and the skin of the human body form an angle of 30-40 degrees and are inserted into the blood vessel from the cut small opening, then the guide wire is inserted into the blood vessel from an inner channel of the puncture needle, then the conduit sheath provided with the expander is inserted into the blood vessel along the guide wire, then the guide wire is drawn out, a hemostasis valve at one end of the conduit sheath is sealed, a medicine is injected into a three-way valve at one end of a side tube of the conduit sheath, and the conduit sheath is stable and can provide a channel for entering the blood vessel, so that the puncture needle can not penetrate into the blood vessel for many times, and a patient can be injured for many times.

For example, the new patent with the publication number of CN 216394210U, the publication date of 2022.04.29, entitled "an auxiliary guide wire interventional puncture needle for radiation interventional therapy" includes: the needle seat, the needle head, the tailstock, the sealing gasket, the bracket, the fixer and the puncture hole; the method is characterized in that: the front end of the needle seat is provided with a needle head, and the needle seat is connected with the needle head in an embedding way; the tailstock is positioned at the tail end of the needle seat, and the tailstock and the needle seat are of an integrated structure; the sealing gasket is arranged inside the tailstock, and the sealing gasket is connected with the tailstock in an embedding manner; the bracket is arranged at the lower part of the tail end of the needle seat, and the bracket is connected with the needle seat in an embedding way; the fixer is arranged on the upper portion of the support, and the fixer is connected with the support in a welding mode.

In the prior art, in order to judge whether the puncture is successful, a doctor determines that the puncture is successful by depending on blood flow jetted from a puncture needle, but obviously, the jetting of the blood flow is unfavorable for a patient, so that the doctor generally inserts a guide wire into the puncture needle to block the blood flow within 1-2 seconds after the jetting of the blood flow, and a hemostatic valve or a gasket is further arranged at the end part of the puncture needle in the prior art, but the hemostatic valve and the gasket are used for preventing a small amount of blood flow from overflowing during the puncture of the guide wire, because the successful puncture needs to be confirmed by depending on the blood flow, obviously, the prior art cannot realize the conflicting requirements of preventing the jetting of the blood flow and confirming the successful puncture.

Disclosure of Invention

The invention aims to provide a high-strength catheter sheath group to solve the defects in the prior art.

In order to achieve the above purpose, the invention provides the following technical scheme:

a high-strength catheter sheath set comprises a needle seat and a needle head fixedly connected with one end of the needle seat, wherein a visual splash-proof assembly is arranged at the other end of the needle seat;

the visual splash-proof assembly comprises a capsule body for abutting the needle seat.

In the high-strength catheter sheath set, the capsule body is made of transparent materials.

The high-strength catheter sheath set is characterized in that the capsule body is provided with the blocking module, the blocking module comprises a baffle, two ends of the capsule body are fixedly connected with the casing and the first pipeline respectively, the inner side wall of the casing is connected with the second pipeline in a sliding mode, and the baffle is arranged between the first pipeline and the second pipeline.

In the high-strength catheter sheath set, the first pipeline is provided with the through hole at one end arranged in the capsule body.

Foretell a high strength conduit sheath group, the sleeve pipe lateral wall rigid coupling has the mounting bracket, the mounting bracket inside wall has set gradually first butt piece and second butt piece along the axial, second pipeline lateral wall rigid coupling has the L shaped plate, the L shaped plate keep away from the second pipeline one end with first butt piece with a butt in the second butt piece corresponds the primary importance and the second place of L shaped plate respectively, the one end of curved elasticity reset plate of first pipeline lateral wall rigid coupling, just the other end rigid coupling that first pipeline was kept away from to the elasticity reset plate is in the baffle lateral wall.

In the above high-strength catheter sheath assembly, the elastic return plate is made of a hard elastic material.

In the high-strength catheter sheath set, one end of the L-shaped plate, which is far away from the second conduit, is wedge-shaped, and the cross sections of the first abutting block and the second abutting block are both in a shape of a right triangle.

In the high-strength catheter sheath set, the outer side wall of the second pipeline is fixedly connected with the sliding block, one end of the sleeve is provided with the sliding groove, and the sliding block is connected with the sliding groove in a sliding manner.

The sliding groove is in a shape like a Chinese character 'tu', the sliding block is fixedly connected with a limiting block, and the limiting block is abutted to the sliding groove.

In the high-strength catheter sheath set, the surface of the needle is provided with the hydrophilic coating.

In the technical scheme, the high-strength catheter sheath set provided by the invention has the advantages that the capsule body is arranged, so that the splashed blood after the needle head is inserted into a blood vessel can be completely blocked, the blood splashing is effectively avoided, the trouble of medical personnel in subsequent cleaning of an operation site is reduced to a certain extent, and whether the puncture is successful or not can be observed through the visual transparent capsule body.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is a schematic view of the overall structure of a catheter sheath assembly according to an embodiment of the present invention;

FIG. 2 is a schematic front view of a catheter sheath assembly according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view taken at a-a in FIG. 2;

FIG. 4 is a schematic diagram of the structure of a capsule body and a sleeve provided by the embodiment of the invention;

FIG. 5 is a schematic structural diagram of a second duct and a slider according to an embodiment of the present invention;

FIG. 6 is an exploded view of the first and second conduits according to the exemplary embodiment of the present invention;

FIG. 7 is an enlarged view of a portion A of FIG. 1;

FIG. 8 is an enlarged view of a portion of the structure of FIG. 3 at B;

FIG. 9 is an enlarged view of a portion of the structure of FIG. 3 at C;

FIG. 10 is an overall cross-sectional view provided by another embodiment of the present invention;

FIG. 11 is an overall cross-sectional view of yet another embodiment of the present invention;

FIG. 12 is a schematic view of a connection structure of a first pipe and a second pipe according to still another embodiment of the present invention;

FIG. 13 is a schematic view of an overall structure of a baffle according to yet another embodiment of the present invention;

fig. 14 is a partially enlarged view of the structure at D in fig. 11.

Description of reference numerals:

1. a needle seat; 2. a needle head; 3. a capsule body; 3.1, soft zone; 3.2, an elastic zone; 4. a baffle plate; 4.1, a first blocking part; 4.2, a second blocking part; 4.3, moving blocks; 4.4, a limiting part; 5. a sleeve; 6. a first conduit; 7. a second pipe; 7.1, an insertion part; 8. a through hole; 9. a mounting frame; 10. a first abutment block; 11. a second abutment block; 12. an L-shaped plate; 13. an elastic return plate; 14. a slider; 15. a chute; 16. a limiting block; 17. a hydrophilic coating; 18. a hand-held portion; 19. an anti-slip layer; 20. an indication mark; 21. an extension portion; 22. a guide rail; 23. a blocking block; 24. and connecting ropes.

Detailed Description

In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.

Referring to fig. 1-9, an embodiment of the present invention provides a high-strength catheter sheath set, including a needle base 1 and a needle head 2 fixedly connected to one end of the needle base 1, wherein a visual splash-proof assembly is arranged at the other end of the needle base 1; the visual splash-proof assembly comprises a capsule body 3 for butting the needle seat 1.

Specifically, one end of the needle head 2 is provided with a sharp end, the sharp end is provided with a tangent plane, when the artery is punctured, the tangent plane of the needle head 2 is upward, the needle head 2 and the skin of the puncture position of a patient are inserted into the artery from an incision position at an angle of 30-40 degrees, at the moment, blood in the artery can be splashed onto a surgical drape in a medical operation working area along the inner cavity of the needle head 2 and the needle seat 1, which is one of the reasons for blood contamination of the surgical drape, the prior art and the description are omitted, one of the innovation points of the invention is to provide a visual anti-splash component which is used for preventing the blood splashing caused by the insertion of the needle head 2 into the artery, the visual anti-splash component comprises a visual capsule body 3, the visual capsule body 3 is transparent and can see the blood entering the visual capsule body, and specifically, the capsule body 3 can be in an ellipsoidal shape or cylindrical shape, the capsule body 3 is provided with a soft area 3.1, at least two soft areas 3.1 are needed to balance the pressure inside the capsule body 3, at least one end of the capsule body 3 is provided with an opening, the capsule body 3 is connected to the end part of the needle seat 1 through the opening, the two ends of the optional capsule body 3 are provided with openings, the two openings of the capsule body 3 are circular and are coaxially arranged with the needle seat 1 and the needle head 2, one end of the needle seat 1 is fixedly connected with a connecting pipe, the capsule body 3 is connected to the connecting pipe through one opening, the connecting pipe can be connected with the needle seat 1 in a plugging and pulling way or can be in a screw connection way, the joint of the two is coated with sealant, the arrangement is characterized in that after the needle head 2 is inserted into an artery, blood inside the artery enters the capsule body 3 through the needle head 2, the needle seat 1 and the connecting pipe, and the other opening of the capsule body 3 is in a sealing state, blood that splashes in the follow artery can be kept in capsule body 3 temporarily, avoids blood direct splash to the operation area, has guaranteed the cleanness in operation area, and the device can continuously keep blood can't splash to the outside state, provides sufficient time for medical staff prepares the guide wire, and because inner space, treat that soft material is by the extrusion inflation back, capsule body internal pressure increases, and blood can't enter into capsule body promptly, has prevented the continuous injection of blood.

Furthermore, when the artery puncture is carried out, whether the puncture needle is inserted into the artery is judged by whether blood splashes from the puncture needle, therefore, in order to prevent the blood splashing and judge whether the puncture needle is inserted into the blood vessel, the capsule body 3 is made of transparent material, preferably, the transparent material can be transparent medical plastic, the arrangement is that a medical staff can observe whether the blood splashes in the capsule body 3 through the transparent side wall of the capsule body 3, when the blood splashes in the capsule body 3 through the puncture needle, the puncture needle is correctly inserted into the artery, and on the contrary, when the blood splashes in the capsule body 3, the puncture needle 2 is not inserted into the artery, the medical staff can judge whether the puncture needle 2 is correctly inserted into the arterial blood vessel.

As an embodiment of the present invention, the capsule body 3 is provided with a blocking module, the blocking module includes a baffle 4, two ends of the capsule body 3 are respectively and fixedly connected with a sleeve 5 and a first pipeline 6, an inner side wall of the sleeve 5 is slidably connected with a second pipeline 7, the baffle 4 is disposed between the first pipeline 6 and the second pipeline 7, specifically, the sleeve 5 is fixedly connected to the other opening of the capsule body 3, the first pipeline 6 is fixedly connected to an inner side wall of a connecting pipe at one end of the needle base 1, the second pipeline 7 can axially slide along the inner wall of the sleeve 5, the second pipeline 7 is in dynamic sealing connection with the sleeve 5, and a side surface of the baffle 4 close to the second pipeline 7 is provided with a convex part, the diameter of the convex part is equal to the inner diameter of the second pipeline 7, such an arrangement is used that the convex part of the baffle 4 is inserted into the second pipeline 7, and the second pipeline 7 abuts against the baffle 4 through an external force, so as to avoid looseness of the baffle 4, so as to increase a sealing effect of the baffle 4 on the second pipeline 7, and prevent blood from entering the second pipeline 7, thereby preventing the blood from flowing into the outside.

Further, the first pipeline 6 is arranged at one end inside the capsule body 3, and is provided with a through hole 8, specifically, the through hole 8 can be circular, square or preferable, and the number of the through holes 8 is not less than four, and in an initial state, the first pipeline 6 is not communicated with the second pipeline 7 under the action of the baffle 4 and is in an isolation state with the outside, and blood can only flow into the capsule body 3 through the through hole 8, so that whether the artery is successfully punctured can be conveniently detected.

As an embodiment of the present invention, it is preferable that the outer sidewall of the sleeve 5 is fixedly connected with a mounting bracket 9, the inner sidewall of the mounting bracket 9 is sequentially provided with a first abutting block 10 and a second abutting block 11 along the axial direction, the outer sidewall of the second conduit 7 is fixedly connected with an L-shaped plate 12, one end of the L-shaped plate 12 away from the second conduit 7 abuts against one of the first abutting block 10 and the second abutting block 11, respectively corresponding to a first position (abutting against the first abutting block 10) and a second position (abutting against the second abutting block 11) of the L-shaped plate 12, the outer sidewall of the first conduit 6 is fixedly connected with one end of an arc-shaped elastic return plate 13, and the other end of the elastic return plate 13 away from the first conduit 6 is fixedly connected to the outer sidewall of the baffle 4, specifically, the L-shaped plate 12, the mounting bracket 9, the first abutting block 10 and the second abutting block 11 are all provided with a plurality of abutting blocks, and the plurality of abutting against the first abutting block 10 and the second abutting block 11, and the plurality of abutting blocks are provided in parallel in the axial direction, the first abutting block 10 and the second abutting against the baffle 4, and the baffle 12 is provided with a position, and the baffle 12 is provided with a stable thickness of the baffle 12, and the baffle is provided for preventing the hard blood from coming out of the baffle 4, and the baffle from coming out of the baffle 4.

Furthermore, when the guide wire is punctured, one end of the guide wire is firstly penetrated into one end of the second pipeline 7, then the two L-shaped plates 12 are pressed simultaneously, so that the L-shaped plates 12 are bent, the wedge-shaped ends of the L-shaped plates 12 are driven to move in the direction opposite to the direction of the first butting block 10, the limiting effect of the first butting block 10 on the L-shaped plates 12 is relieved, then an axial acting force in the direction opposite to the direction of the first pipeline 6 is applied to the L-shaped plates 12, the L-shaped plates 12 are fixedly connected to the outer side wall of the second pipeline 7, so that the second pipeline 7 is driven to move in the direction opposite to the direction of the sliding sleeve and the first pipeline 6, then under the action of the elastic resetting plate 13, the baffle plate 4 is separated from the second pipeline 7, at the moment, the baffle plate 4 leaves the end part of the first pipeline 6 under the double driving of the blood conveyed by the artery and the elastic resetting of the elastic resetting plate 13, at the moment, the second pipeline 7 is communicated with the inside of the capsule body 3, but blood still cannot be sprayed out or only slightly oozes out under the action of the guide wire, then an axial acting force towards the direction of the first pipeline 6 is applied to the L-shaped plate 12, so that the second pipeline 7 moves towards the first pipeline 6, when the second pipeline 7 is abutted against one end of the first pipeline 6, the L-shaped plate 12 is loosened, the L-shaped plate 12 automatically resets under the action of self elastic force, at the moment, the L-shaped plate 12 is just abutted against the second abutting block 11, the position is the second position of the L-shaped plate 12, at the moment, the first pipeline 6 is communicated with the second pipeline 7, the guide wire can be inserted into the puncture needle, and no blood flows out in the process.

Still further, the second position is arranged to compensate for the vacant parts of the first pipeline 6 and the second pipeline 7 caused by the thickness of the baffle 4, so that when the guide wire is inserted, one end of the guide wire is inserted into the capsule body 3 from the vacant parts, and the success rate of the guide wire insertion is ensured.

Still further, elasticity resets board 13 and is made for stereoplasm elastic material, it is concrete, elasticity resets board 13, when baffle 4 is pressed and connect between second pipeline 7 and first pipeline 6, elasticity resets board 13 and is the bending form, its inside great elastic potential energy that has stored, the effect that so sets up lies in, after second pipeline 7 has been relieved to the butt effect of baffle 4, baffle 4 is under the effect of the inside elastic potential energy of elasticity reset board 13 that blood strikes, can accelerate the speed that baffle 4 breaks away from first pipeline 6 and second pipeline 7 vacancy position on the one hand, thereby can insert second pipeline 7 fast, on the other hand can carry out fixing to a certain extent to the position after baffle 4 breaks away from the vacancy position, thereby avoided baffle 4 to swing the vacancy position once more and influenced first pipeline 6 and second pipeline 7 butt.

Furtherly again, the one end that second pipeline 7 was kept away from to L shaped plate 12 is the wedge,

first butt piece

10 and 11 cross sections of second butt piece all are straight triangle-shaped, and is specific, and

first butt piece

10 and 11 square face of second butt piece and mounting bracket 9 inside wall fixed connection press L shaped plate 12 strength when not enough at the manpower, when the wedge face of L shaped plate 12 one end contacts and extrudees with butt piece inclined plane, can promote L shaped plate 12 and remove to 7 directions of second pipeline to can avoid the butt piece, avoid L shaped plate 12 and butt piece to block, thereby make things convenient for the removal of L shaped plate 12.

As an embodiment of the present invention, preferably, the outer side wall of the second pipeline 7 is fixedly connected with a slide block 14, one end of the sleeve 5 is provided with a slide groove 15, the slide block 14 is slidably connected with the slide groove 15, preferably, two slide blocks 14 are provided, and are oppositely arranged on the outer side wall of the second pipeline 7, when the second pipeline 7 axially slides, the two slide blocks 14 are driven to axially move along the inner side walls of the two slide grooves 15, and the second pipeline 7 can be restricted from rotating by itself while horizontally sliding along the sleeve, so that not only can the sliding stability of the second pipeline 7 be increased, but also the L-shaped plate 12, the first abutting block 10 and the second abutting block 11 can be always in the same straight line, and it is ensured that the L-shaped plate 12 can be normally abutted against the first abutting block 10 and the second abutting block.

Further, spout 15 is "protruding" font, the rigid coupling has stopper 16 on the slider 14, stopper 16 with spout 15 butt, it is specific, stopper 16 has four, and symmetric distribution is in both sides about two stopper 16, so set up be used in, can play the spacing of horizontal direction to slider 14 and spout 15 on the one hand, on the other hand, when stopper 16 slided certain degree along spout 15, stopper 16 can with the border position butt of spout 15 inner wall, can restrict second pipeline 7 and continue to move along sleeve pipe 5 to can prevent that second pipeline 7 from separating with sleeve pipe 5.

As an embodiment of the present invention, it is preferable that the surface of the needle 2 is provided with a hydrophilic coating 17, and particularly, the region from one third of the needle 2 to the edge of the needle base 1 is covered with the hydrophilic coating 17, so that the tip of the needle 2 is made of a metal material to increase its hardness and facilitate its entering into arterial blood vessels, and the latter half is covered with the hydrophilic coating 17, so that the hydrophilic coating 17 can play a role in lubrication and reduce the resistance of the needle 2 to be inserted into the skin or blood vessels of the human body due to the material characteristics of the hydrophilic coating 17.

As another embodiment of the present invention, preferably, the outer side wall of the needle base 1 is fixedly connected with the handheld portion 18, and the surface of the handheld portion 18 is provided with the anti-slip layer 19, specifically, the surface of the anti-slip layer 19 is serrated, and the serrated shape is horizontally arranged on the inner wall of the groove, two handheld portions 18 are provided, one side of each of the two handheld portions 18 is provided with a groove, the two anti-slip layers 19 are respectively fixedly connected inside the two grooves, and are axially symmetrically arranged with respect to the center of the needle base 1, such arrangement is used by a medical worker, the thumb and the forefinger respectively press the surfaces of the two anti-slip layers 19, the edges of the grooves play a certain limiting role in the vertical direction for the thumb and the forefinger, the horizontally arranged serrated shape plays a certain anti-slip role in the horizontal direction for the thumb and the edges of the grooves are combined with the anti-slip layers 19, so as to increase the stability of the medical worker in puncturing.

Further, an indication mark 20 is fixedly connected to the handheld portion 18, specifically, the indication mark 20 is located on a side surface of the handheld portion 18, the indication mark 20 may be in a common shape, and may also be a number or a letter, preferably, the two handheld portions 18 are arranged in an axisymmetric manner with the center of the needle holder 1, and the tip of the needle 2 is located on a symmetric plane of the two handheld portions 18, such arrangement is used for when the device is horizontally placed, the indication mark 20 is located on an upper surface or a lower surface of the handheld portion 18, the tip of the needle 2 is located right above or right below, that is, the tangent plane of the needle 2 is up or down, that is, when the indication mark 20 is located above, the tangent plane of the needle 2 is up, and when the puncture needle penetrates into a blood vessel in this direction, pain of a patient is minimal, and it may help a medical staff to confirm the orientation of the tangent plane of the needle 2.

As another embodiment of the present invention, referring to fig. 10, preferably, the through hole 8 is provided at the top end of the first tube 6, the second tube 7 is provided with an insertion portion 7.1 adapted to the inner diameter of the first tube 6, specifically, the first tube 6 and the second tube 7 are coaxially arranged, the outer diameter of the first tube 6 is equal to the outer diameter of the second tube 7, but the thickness of the upper half of the second tube 7 is greater than that of the first tube 6, the insertion portion is provided at the bottom end of the second tube 7, the thickness of the insertion portion 7.1 is smaller, the outer diameter of the insertion portion is equal to the inner diameter of the first tube 6, and the axial length of the insertion portion 7.1 is longer than that of the through hole 8, so as to draw the second tube 7, the baffle 4 is ejected by the elastic force of the elastic reset plate 13 and the impact force of the blood flow, at which the L-shaped plate 12 is pinched, the insertion portion 7.1 of the second tube 7 is inserted into the first tube 6, all the through hole 8 is blocked, and the insertion block 11 and the insertion portion is fixed at a position lower than the inner height of the second tube 7.1 (at which the second tube 7 is lower than the second capsule and the inner position of the capsule 3).

As another embodiment of the present invention, referring to fig. 11 to 14, preferably, the baffle plate 4 includes two first blocking portions 4.1, two second blocking portions 4.2, two moving blocks 4.3, and two position-limiting portions 4.4, the first blocking portion 4.1 is disposed between the first pipe 6 and the second pipe 7, the second blocking portion 4.2 and the moving block 4.3 are both disposed on the lower surface of the first blocking portion 4.1, the position-limiting portion 4.4 is disposed on the upper surface of the first blocking portion 4.1, an extending portion 21 is disposed outside the first pipe 6, a guide rail 22 is disposed at the top end of the extending portion 21, the moving block 4.3 is slidably connected to the guide rail 22, a through hole 8 is disposed inside the extending portion 21, a blocking block 23 is fixedly connected inside the through hole 8, an elastic region 3.2 is further disposed on the capsule body 3, a connecting rope 24 is disposed between the elastic region 3.2 and the first blocking portion 4.1, specifically, the elastic zone 3.2, the baffle 4, the extension part 21, the guide rail 22, the stop block 23 and the connecting rope 24 are provided with two parts, two parts are respectively arranged on two opposite sides of the first pipeline 6, the two first stop parts 4.1 are both semicircular, the two limit parts 4.4 are also semicircular, the diameter of the limit parts 4.4 is smaller than that of the first stop parts 4.1, the moving block 4.3 is fixedly connected to the lower surface of the first stop parts 4.2, the cross sections of the moving block 4.3 and the guide rail 22 are both in a convex shape, the moving block 4.3 is in sliding connection with the guide rail 22, the limit parts 4.4 extend into the second pipeline 7, on one hand, the sealing effect of the baffle 4 on the second pipeline 7 can be improved, on the other hand, the second pipeline 7 can play a limiting effect on the two first stop parts 4.1, the two first stop parts 4.1 are prevented from being separated, the two first stop parts 4.1 are connected in a fitting manner, and the size of the second stop part 4.2 is matched with the size of the through hole 8, in an initial state, the elastic zone 3.2 is in a stretching state pulled by the connecting rope, and the connecting rope 24 is preferably a soft rope without elasticity, and the function of the arrangement is that the L-shaped plate 12 is pinched, the second pipeline 7 is pulled, so that the second pipeline 7 is separated from the limiting part 4.1, therefore, the limiting effect of the second pipeline 7 on the baffle 4 is relieved, the elastic zone 3.2 can automatically recover and provide an acting force which is far away from the first pipeline 6 direction and is perpendicular to the axial direction for the connecting rope 24 and the first blocking part 4.1, because the second blocking part 4.2, the first blocking part 4.1 and the moving block 4.3 are fixedly connected, the two moving blocks 4.3 can be driven to move oppositely along the guide rail 22, the movement is stopped when the second blocking part 4.2 and the blocking block 23 are tightly attached, at this time, the first blocking part 4.1 also completely moves to two sides from the central positions of the first pipeline 6 and the second pipeline 7, then the L-shaped plate 12 is fixed at the second position, and at this time, a guide wire through path for the first pipeline 6 and the second pipeline 7 to pass through is formed. Because the size of the second blocking part 4.2 is matched with the size of the through hole 8, the through hole 8 can be blocked while the second blocking part 4.2 moves horizontally, the backflow of the blood which is coagulated in the capsule body 3 is prevented, and the occurrence of complications such as thrombus and the like is avoided. When the elastic region 3.2 is changed from the stretching state to the normal state, the internal space of the capsule body 3 is enlarged, so that the capsule body 3 can generate a suction effect on the inside of the first pipeline 6 and the second pipeline 7, blood/air in the first pipeline 6 and the second pipeline 7 can be sucked into the capsule body 3, and the blood is prevented from seeping out from the outlet of the second pipeline 7 when the second pipeline 7 is pulled.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and are not to be construed as limiting the scope of the invention.

Claims

1. A high-strength catheter sheath set comprises a needle seat and a needle head fixedly connected with one end of the needle seat, and is characterized in that a visual splash-proof assembly is arranged at the other end of the needle seat;

2. The sheath assembly of claim 1, wherein the capsule body is made of transparent material.

3. The high-strength catheter sheath set according to claim 1, wherein the capsule body is provided with a blocking module, the blocking module comprises a baffle, the capsule body is fixedly connected with a sleeve and a first pipeline at two ends respectively, a second pipeline is slidably connected to an inner side wall of the sleeve, and the baffle is arranged between the first pipeline and the second pipeline.

4. The high-strength catheter sheath set as claimed in claim 3, wherein the first tube is provided with a through hole at one end thereof disposed inside the capsule body.

5. The high-strength conduit sheath group according to claim 3, wherein the outer side wall of the sleeve is fixedly connected with a mounting frame, a first abutting block and a second abutting block are sequentially arranged on the inner side wall of the mounting frame along the axial direction, an L-shaped plate is fixedly connected to the outer side wall of the second conduit, one end of the L-shaped plate, which is far away from the second conduit, is abutted to one of the first abutting block and the second abutting block and corresponds to the first position and the second position of the L-shaped plate respectively, one end of a curved elastic reset plate is fixedly connected to the outer side wall of the first conduit, and the other end of the elastic reset plate, which is far away from the first conduit, is fixedly connected to the outer side wall of the baffle.

6. The sheath assembly of claim 5, wherein the resilient return plate is formed of a hard elastomeric material.

7. The high strength catheter sheath set of claim 5 wherein the end of the L-shaped plate distal to the second conduit is wedge-shaped, and the first and second abutment blocks are each right triangular in cross-section.

8. The high-strength catheter sheath set according to claim 5, wherein a sliding block is fixedly connected to an outer side wall of the second conduit, a sliding groove is formed at one end of the sleeve, and the sliding block is slidably connected with the sliding groove.

9. The high-strength catheter sheath set according to claim 8, wherein the sliding groove is in a shape of a Chinese character 'tu', and a limiting block is fixedly connected to the sliding block and abuts against the sliding groove.

10. The high strength catheter sheath set of claim 1 wherein the needle surface is provided with a hydrophilic coating.