Vascular puncture sheath

Abstract

The utility model provides a blood vessel puncture sheath. The blood vessel puncture sheath comprises an outer sheath tube, a hemostasis valve, a three-way valve, a connecting tube, a thread hanging device and a dilator. The hemostasis valve is fixedly connected with the near end of the outer sheath tube; the dilator penetrates through the hemostasis valve and enters the outer sheath tube; the three-way valve is communicated with the hemostasis valve through a connecting pipe; the outer sheath tube is sleeved with the suture hanging device, the suture hanging device is close to the far end of the outer sheath tube, the far end of the outer sheath tube penetrates through the suture hanging device to be exposed, and a suture hanging hole and / or a suture hanging groove used for fixing a suture line are / is formed in the suture hanging device. The situation that the outer sheath tube is inserted too deep and makes contact with the opposite side blood vessel wall, and blood vessel injuries are caused is avoided. And the condition that the whole blood vessel puncture sheath is pushed out by blood pressure due to high blood pressure of the main artery is prevented. The situation that the whole blood vessel puncture sheath falls off due to the fact that the whole blood vessel puncture sheath is touched carelessly is avoided. In addition, the utility model further provides a blood vessel sheath set.

Description

Technical Field

[0001] The utility model relates to the technical field of cardiovascular medical devices, in particular to a blood vessel puncture sheath. Background Art

[0002] During cardiac surgery, it is sometimes necessary to introduce instruments through the aorta for interventional procedures, such as introducing an aortic stent through the aorta to solve the problem of arterial dissection; another example is introducing an embolic protection device through the aorta to reduce the incidence of events such as cerebral embolism and organ embolism during cardiac surgery. In the case of open chest, the introduction of instruments into large blood vessels (such as the aorta) usually requires a vascular sheath to puncture the large blood vessels to establish a channel, and then introduce other instruments through the channel of the vascular sheath. However, current vascular sheaths are usually used for percutaneous interventional operations on small and medium-sized blood vessels; they are not suitable for puncturing large arteries in open chest. When puncturing large arteries in open chest, due to the operating space and field of view, the angle between the punctured blood vessel direction and the puncture direction is usually large, while in percutaneous operations, the angle between the punctured blood vessel direction and the puncture direction is small, or even close to parallel. This limits the puncture depth of the vascular sheath to not be too deep, so as to avoid the puncture sheath damaging the vessel wall on the opposite side of the puncture point.

[0003] In addition, when using a vascular sheath to puncture a large artery, the anchoring of the vascular sheath is more complicated. The blood pressure in the large artery is high, and the vascular sheath is easily pushed out by the blood pressure. At the same time, the surgical operation is complicated and many instruments are used. If the vascular sheath cannot be well anchored on the blood vessel, it may cause the vascular sheath to fall off and cause a major bleeding event; therefore, the vascular sheath needs to be well anchored on the large artery. In addition, when performing large blood vessel puncture, in order to prevent arterial dissection, tearing and other injuries caused by blood vessel puncture, suturing operations are usually required, and the sutures also need to be fixed. Therefore, the sutures near the puncture site during puncture can be used to anchor the vascular sheath. Utility Model Content

[0004] The utility model aims to provide a blood vessel puncture sheath to solve the above-mentioned problem.

[0005] In order to achieve the above-mentioned purpose of the utility model, the following technical solutions are adopted:

[0006] The present application provides a vascular puncture sheath, comprising an outer sheath tube, a hemostatic valve, a three-way valve, a connecting tube, a wire hanger and a dilator;

[0007] The hemostatic valve is fixedly connected to the proximal end of the outer sheath;

[0008] The dilator passes through the hemostatic valve and enters the outer sheath;

[0009] The three-way valve is connected to the hemostatic valve through the connecting pipe;

[0010] The thread hanger is sleeved on the outer sheath tube, the thread hanger is close to the distal end of the outer sheath tube, the distal end of the outer sheath tube passes through the thread hanger and is exposed, and the thread hanger is provided with a thread hanging hole and / or a thread hanging groove for fixing the suture thread.

[0011] Furthermore, the thread hanger comprises a disc body, the disc body is sleeved on the outer sheath tube and fixedly connected to the outer sheath tube, and the disc body is provided with a thread hanging hole and / or a thread hanging groove for fixing the suture thread.

[0012] Further, the wire hanging device includes a wire hanging component and a fixing ring;

[0013] The wire hanging component comprises a sleeve and a disc body fixedly connected to the sleeve, a central hole is provided between the sleeve and the disc body, the wire hanging component is sleeved on the outer sheath tube through the central hole, the disc body is arranged toward the distal end of the outer sheath tube, a gap is provided between the wire hanging component and the outer sheath tube, and the disc body is provided with the wire hanging hole and / or wire hanging groove for fixing the suture thread;

[0014] The proximal end of the fixing ring is sleeved on the outer sheath tube at the proximal end side of the sleeve, and the distal end of the fixing ring is sleeved on the sleeve, so that the fixing ring forms a small-diameter outer sheath tube connecting section and a large-diameter sleeve connecting section, the outer sheath tube connecting section has an interference fit with the outer sheath tube, the sleeve connecting section has an interference fit with the sleeve, or the sleeve connecting section is adhesively connected to the sleeve.

[0015] Further, the wire hanging device includes a wire hanging component and a fixing ring;

[0016] The wire hanging component comprises a sleeve and a disc body fixedly connected to the sleeve, a central hole is provided between the sleeve and the disc body, the wire hanging component is sleeved on the outer sheath tube through the central hole, the disc body is arranged toward the distal end of the outer sheath tube, a gap is provided between the wire hanging component and the outer sheath tube, and the disc body is provided with the wire hanging hole and / or the wire hanging groove for fixing the suture thread;

[0017] A receiving groove is provided on the hole wall of the central hole, a step arrangement is formed between the proximal end of the receiving groove and the hole wall to form a proximal limit step, and a distal end of the receiving groove is through-set;

[0018] The fixing ring comprises a first fixing ring and a second fixing ring, the first fixing ring is arranged in the containing groove and sleeved on the outer sheath tube, and the first fixing ring and the outer sheath tube are interference fit;

[0019] The second fixing ring is sleeved on the outer sheath tube at the proximal end side of the sleeve and abuts against the proximal end of the sleeve. The second fixing ring and the outer sheath tube are interference fit.

[0020] Further, the wire hanging device includes a wire hanging component and a fixing ring;

[0021] The wire hanging component comprises a sleeve and a disc body fixedly connected to the sleeve, a central hole is provided between the sleeve and the disc body, the wire hanging component is sleeved on the outer sheath tube through the central hole, the disc body is arranged toward the distal end of the outer sheath tube, a gap is provided between the wire hanging component and the outer sheath tube, and the disc body is provided with the wire hanging hole and / or wire hanging groove for fixing the suture thread;

[0022] A limit fixing groove is provided on the hole wall of the central hole, a step arrangement is formed between the proximal end of the limit fixing groove and the hole wall to form a proximal limit step, and a step arrangement is formed between the distal end of the limit fixing groove and the hole wall to form a distal limit step;

[0023] The fixing ring is arranged in the limiting fixing groove and sleeved on the outer sheath tube, and the fixing ring and the outer sheath tube are interference fit.

[0024] Further, the wire hanging device includes a wire hanging component and a fixing ring;

[0025] The wire hanging component comprises a sleeve and two discs fixedly connected to both ends of the sleeve, a central hole is provided between the sleeve and the two discs, the wire hanging component is sleeved on the outer sheath through the central hole, a gap is provided between the wire hanging component and the outer sheath, and the two discs are provided with the wire hanging hole and / or wire hanging groove for fixing the suture thread;

[0026] A limit fixing groove is provided on the hole wall of the central hole, a step arrangement is formed between the proximal end of the limit fixing groove and the hole wall to form a proximal limit step, and a step arrangement is formed between the distal end of the limit fixing groove and the hole wall to form a distal limit step;

[0027] The fixing ring is arranged in the limiting fixing groove and sleeved on the outer sheath tube, and the fixing ring and the outer sheath tube are interference fit.

[0028] Furthermore, the disc body comprises a circular disc body, and the circular disc body is provided with the wire hanging hole and / or the wire hanging groove.

[0029] Furthermore, the disc body includes a circular disc body and lugs arranged on both sides of the circular disc body, and the lugs are provided with the wire hanging holes and / or the wire hanging grooves.

[0030] Furthermore, the wire hanging groove is a U-shaped groove.

[0031] Furthermore, the fixing ring can slide on the outer sheath tube and be fixed at any position to adjust the depth of the outer sheath tube entering the puncture point, which is convenient for use; the fixing ring is made of elastic material.

[0032] The technical solution of the utility model has the following advantages:

[0033] 1. When performing large vessel puncture, the wire hanger at the distal end of the outer sheath can be placed against the vessel wall to prevent the outer sheath from being inserted too deeply and contacting the opposite vessel wall, causing vascular damage. In addition, it can also prevent the entire vascular puncture sheath from being pushed out by the high blood pressure in the large artery, thereby reducing the risk and complexity of the large vessel puncture process.

[0034] 2. The wire hanging hole and / or wire hanging groove on the wire hanging device can fix the suture on the wire hanging device. By connecting the suture near the puncture port with the wire hanging device, the wire hanging device can anchor the vascular puncture sheath to prevent the entire vascular puncture sheath from falling off due to being accidentally touched.

[0035] 3. For the method in which the wire hanger is movably mounted on the outer sheath, the wire hanger can be moved on the outer sheath and positioned arbitrarily, and the depth of the fixed sheath entering the puncture point can be conveniently adjusted to facilitate the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 This is a schematic diagram of the structure of the vascular puncture sheath of the present application;

[0038] Figure 2 A schematic diagram of the connection relationship between the outer sheath tube and the wire hanging device provided in Example 1 of the present application;

[0039] Figure 3 This is a schematic diagram of the structure of the first disc of the vascular puncture sheath of the present application;

[0040] Figure 4 This is a schematic diagram of the structure of the second disc of the vascular puncture sheath of the present application;

[0041] Figure 5A schematic diagram of the connection relationship between the outer sheath tube and the wire hanging device provided in the second embodiment of the present application;

[0042] Figure 6 for Figure 5 AA section view in;

[0043] Figure 7 A cross-sectional view of a wire hanging component according to Embodiment 2 of the present application;

[0044] Figure 8 A schematic diagram of the connection relationship between the outer sheath tube and the wire hanging device provided in the third embodiment of the present application;

[0045] Fig. 9 for Figure 8 BB section view in;

[0046] Fig.10 A cross-sectional view of a wire hanging component according to Embodiment 3 of the present application;

[0047] Fig.11 A schematic diagram of the connection relationship between the outer sheath tube and the wire hanging device provided in the fourth embodiment of the present application;

[0048] Fig.12 for Fig.11 BB section view in;

[0049] Fig.13 A cross-sectional view of a wire hanging component according to a fourth embodiment of the present application;

[0050] Fig.14 A schematic diagram of the connection relationship between the outer sheath tube and the wire hanging device provided in Example 5 of the present application;

[0051] Fig.15 for Fig.14 DD section view in;

[0052] Fig.16 This is a cross-sectional view of the wire hanging component of the fifth embodiment of the present application.

[0053] Figure markings: 1-outer sheath; 2-hemostatic valve; 3-three-way valve; 4-connecting tube; 5-wire hanging device; 51-wire hanging hole; 52-wire hanging groove; 53-disc body; 6-distal end; 7-center hole; 8-proximal end; 531-disc body; 532-lug; 54-wire hanging component; 55-fixing ring; 541-sleeve; 551-outer sheath connecting section; 552-sleeve connecting section; 56-first fixing ring; 57-second fixing ring; 9-accommodating groove; 10-proximal limit step; 11-limit fixing groove; 12-distal limit step; 13-elbow; 14-dilator. DETAILED DESCRIPTION

[0054] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0055] It should be noted that, for the convenience of description, in this application, the end of the outer sheath tube 1 where the hemostatic valve 2 is installed is defined as the proximal end 8, and the end of the outer sheath tube 1 away from the hemostatic valve 2 is defined as the distal end 6.

[0056] Embodiment 1:

[0057] like Figure 1 and Figure 2 As shown, the vascular puncture sheath of the first embodiment of the present application comprises: an outer sheath tube 1, a hemostatic valve 2, a three-way valve 3, a connecting tube 4, a wire hanger 5 and a dilator 14;

[0058] The hemostatic valve 2 is fixedly connected to the proximal end 8 of the outer sheath tube 1;

[0059] The dilator 14 passes through the hemostatic valve 2 and enters the outer sheath 1;

[0060] The three-way valve 3 is connected to the hemostatic valve 2 through a connecting tube 4;

[0061] The thread hanger 5 is sleeved on the outer sheath 1, close to the distal end 6 of the outer sheath 1, and the distal end 6 of the outer sheath 1 passes through the thread hanger 5 and is exposed. The thread hanger 5 is provided with a thread hanging hole 51 and / or a thread hanging groove 52 for fixing the suture thread.

[0062] Specifically, the thread hanger 5 includes a disk body 53, which is provided with a center hole 7. The disk body 53 is sleeved on the outer sheath tube 1 through the center hole 7. The disk body 53 is fixedly connected to the outer sheath tube 1, and the disk body 53 is provided with a thread hanging hole 51 and / or a thread hanging groove 52 for fixing the suture thread.

[0063] The vascular puncture sheath of the present application is used when a puncture hole is formed by puncturing a blood vessel with a puncture needle. After the puncture needle is punctured, the guide wire enters the dilator 14, and then the entire vascular puncture sheath of the present application is inserted into the blood vessel along the guide wire, and then the dilator 14 is withdrawn from the outer sheath tube 1 to establish a passage, and the outer sheath tube 1 is used as an instrument channel. The same is true for the second to sixth embodiments, and will not be repeated later.

[0064] In the solution of the first embodiment, when performing large blood vessel puncture, the disc 53 is pressed against the blood vessel wall. Since the disc 53 is fixedly connected to the outer sheath tube 1, the arrangement of the disc 53 can prevent the blood vessel puncture sheath of the present application from being inserted too deeply and contacting the opposite blood vessel wall, thereby causing blood vessel damage. In addition, the fixed connection between the disc 53 and the outer sheath tube 1 can also prevent the entire blood vessel puncture sheath from being pushed out by the blood pressure due to the high blood pressure in the large artery, thereby reducing the risk and complexity of the large blood vessel puncture process.

[0065] The solution of the first embodiment of the present invention can fix the suture near the puncture site on the wire hanger 5 through the wire hanging hole 51 and / or the wire hanging groove 52 on the disk body 53. By utilizing the connection between the suture and the wire hanger 5, the wire hanger 5 can anchor the entire vascular puncture sheath to prevent the entire vascular puncture sheath from falling off due to being accidentally touched.

[0066] Figure 1-Figure 2 The disk 53 in the embodiment can be Figure 3 The structure in Figure 3 As shown, preferably, the disk body 53 includes a circular disk body 531 , and the circular disk body 531 is provided with a wire hanging hole 51 and / or a wire hanging groove 52 .

[0067] Figure 1-Figure 2 The disk body 53 in the embodiment can also be used Figure 4 The structure in Figure 4 As shown, preferably, the disc body 53 includes a disc body 531 and lugs 532 arranged on both sides of the disc body 531 , and the lugs 532 are provided with wire hanging holes 51 and / or wire hanging grooves 52 .

[0068] It should be noted that: Figure 3 and Figure 4 In the figure, the hanging hole 51 and the hanging groove 52 on the disc body 53 are only for illustration. The disc body 53 can be provided with only the hanging hole 51, only the hanging groove 52, or both the hanging hole 51 and the hanging groove 52, which can both be used for connecting with the suture thread.

[0069] Preferably, the wire hanging groove 52 is a U-shaped groove, the depth direction of the U-shaped groove is arranged along the circumferential direction of the disk body 53, and passes through the outer edge of the disk body 53 to communicate with the outside.

[0070] Embodiment 2:

[0071] exist Figure 1 Based on the reference Figure 5 , Figure 6 and Figure 7 As shown, the vascular puncture sheath of the second embodiment of the present application includes: an outer sheath tube 1, a hemostatic valve 2, a dilator 14, a three-way valve 3, a connecting tube 4 and a wire hanger 5;

[0072] The hemostatic valve 2 is fixedly connected to the proximal end 8 of the outer sheath tube 1;

[0073] The dilator 14 passes through the hemostatic valve 2 and enters the outer sheath 1;

[0074] The three-way valve 3 is connected to the hemostatic valve 2 through a connecting tube 4;

[0075] The thread hanger 5 is sleeved on the outer sheath 1, close to the distal end 6 of the outer sheath 1, and the distal end 6 of the outer sheath 1 passes through the thread hanger 5 and is exposed. The thread hanger 5 is provided with a thread hanging hole 51 and / or a thread hanging groove 52 for fixing the suture thread.

[0076] Specifically, the wire hanging device 5 includes a wire hanging component 54 and a fixing ring 55;

[0077] The wire hanging component 54 includes a sleeve 541 and a disc 53 fixedly connected to the sleeve 541. A central hole 7 is provided between the sleeve 541 and the disc 53. The wire hanging component 54 is sleeved on the outer sheath tube 1 through the central hole 7. The disc 53 is arranged toward the distal end 6 of the outer sheath tube 1. There is a gap between the wire hanging component 54 and the outer sheath tube 1. The disc 53 is provided with a wire hanging hole 51 and / or a wire hanging groove 52 for fixing the suture thread.

[0078] The proximal end 8 of the fixing ring 55 is sleeved on the outer sheath tube 1 on the proximal end 8 side of the sleeve 541, and the distal end 6 of the fixing ring 55 is sleeved on the sleeve 541, so that the fixing ring 55 forms a small-diameter outer sheath tube connecting section 551 and a large-diameter sleeve connecting section 552, and the outer sheath tube connecting section 551 and the outer sheath tube 1 are interference fit, and the sleeve connecting section 552 and the sleeve 541 are interference fit, or the sleeve connecting section 552 and the sleeve 541 are adhesively connected.

[0079] Through the above arrangement, the fixing ring 55 can slide on the outer sheath tube 1 and be fixed at any position to adjust the depth of the outer sheath tube 1 entering the puncture point, which is convenient for use.

[0080] Preferably, the distal end 6 of the outer sheath tube 1 is provided with an elbow 13 .

[0081] Preferably, the fixing ring 55 is made of elastic material, such as elastomers such as silicone, PU, ​​etc.

[0082] In the solution of the second embodiment, the existence of the fixing ring 55 provides axial movement resistance for the movement between the wire hanging device 5 and the outer sheath tube 1 , and provides circumferential rotation friction resistance for the rotation between the wire hanging device 5 and the outer sheath tube 1 .

[0083] Before performing large vessel puncture, if the puncture length needs to be adjusted according to the actual situation of the patient, the specific adjustment method is:

[0084] When it is necessary to increase the puncture length, the operator applies an axial external force to the outer sheath 1, the wire hanger 5, or the outer sheath 1 and the wire hanger 5 at the same time, so that the outer sheath 1 and the wire hanger 5 overcome the axial movement resistance of the fixing ring 55, and the wire hanger 5 drives the fixing ring 55 to move synchronously toward the proximal end 8 until the length of the distal end 6 of the outer sheath 1 exposed by the wire hanger 5 reaches the target distance, and the applied axial external force is removed. Thus, the axial movement resistance applied to the wire hanger 5 by the fixing ring 55 maintains the wire hanger 5 at the new axial position on the outer sheath 1, and the outer sheath 1 and the wire hanger 5 return to a state where they cannot move axially relative to each other.

[0085] When it is necessary to reduce the puncture length, the operator applies an axial external force to the outer sheath 1, the wire hanger 5, or the outer sheath 1 and the wire hanger 5 at the same time, so that the outer sheath 1 and the wire hanger 5 overcome the axial movement resistance of the fixing ring 55, and the wire hanger 5 drives the fixing ring 55 to move synchronously toward the distal end 6 until the length of the distal end 6 of the outer sheath 1 exposed by the wire hanger 5 reaches the target distance, and the applied axial external force is removed. Thus, the axial movement resistance applied to the wire hanger 5 by the fixing ring 55 maintains the wire hanger 5 at a new axial position on the outer sheath 1, and the outer sheath 1 and the wire hanger 5 return to a state where they cannot move axially relative to each other.

[0086] During the process of puncturing a large blood vessel, when encountering a blood vessel branch, it is necessary to adjust the circumferential position of the elbow 13 at the distal end 6 of the outer sheath tube 1 so that the elbow 13 corresponds to the blood vessel branch to be taken. The specific adjustment method is:

[0087] The operator applies a circumferential rotational external force to the outer sheath tube 1, the wire hanger 5, or the outer sheath tube 1 and the wire hanger 5 at the same time, so that the outer sheath tube 1 and the wire hanger 5 overcome the circumferential rotational friction resistance of the fixing ring 55, and the wire hanger 5 and the outer sheath tube 1 rotate relative to each other, thereby adjusting the circumferential position of the elbow 13 located at the distal end 6 of the outer sheath tube 1. After adjusting to the desired circumferential position, the applied circumferential rotational external force is removed. Under the action of the circumferential rotational friction resistance of the fixing ring 55, the wire hanger 5 is maintained at the new circumferential position on the outer sheath tube 1, and the outer sheath tube 1 and the wire hanger 5 are restored to a state where they cannot rotate relative to each other.

[0088] In the solution of the second embodiment, when performing large blood vessel puncture, the operator can more conveniently press the disc 53 against the blood vessel wall through the sleeve 541, and under the action of the axial movement resistance of the fixing ring 55, it can prevent the blood vessel puncture sheath of the present application from being inserted too deeply and contacting the opposite blood vessel wall, causing blood vessel damage. In addition, the axial movement resistance of the fixing ring 55 can also prevent the entire blood vessel puncture sheath from being pushed out by the blood pressure due to the high blood pressure of the large artery, thereby reducing the complexity of the large blood vessel puncture process.

[0089] In the solution of the second embodiment, the puncture length and the circumferential position of the elbow 13 can be adjusted according to the usage, and has a wider range of applications.

[0090] In the solution of the second embodiment, the suture near the puncture port can be fixed on the wire hanger 5 through the wire hanging hole 51 and / or the wire hanging groove 52 on the disk body 53, and the connection between the suture and the wire hanger 5 is used to anchor the entire blood vessel puncture sheath, preventing the puncture sheath from being accidentally touched and causing the puncture sheath to fall off. In addition, the setting of the sleeve 541 can also increase the contact area between the wire hanger 5 and the outer sheath tube 1, so that the wire hanger 5 can better anchor the entire blood vessel puncture sheath.

[0091] Figure 5-Figure 7 The disk 53 in the embodiment can be Figure 3 The structure in Figure 3 As shown, preferably, the disk body 53 includes a circular disk body 531 , and the circular disk body 531 is provided with a wire hanging hole 51 and / or a wire hanging groove 52 .

[0092] Figure 5-Figure 7 The disk body 53 in the embodiment can also be used Figure 4 The structure in Figure 4 As shown, preferably, the disc body 53 includes a disc body 531 and lugs 532 arranged on both sides of the disc body 531 , and the lugs 532 are provided with wire hanging holes 51 and / or wire hanging grooves 52 .

[0093] It should be noted that: Figure 3 and Figure 4 In the figure, the hanging hole 51 and the hanging groove 52 on the disc body 53 are only for illustration. The disc body 53 can be provided with only the hanging hole 51, only the hanging groove 52, or both the hanging hole 51 and the hanging groove 52, which can both be used for connecting with the suture thread.

[0094] Preferably, the wire hanging groove 52 is a U-shaped groove, the depth direction of the U-shaped groove is arranged along the circumferential direction of the disk body 53, and passes through the outer edge of the disk body 53 to communicate with the outside.

[0095] Embodiment three:

[0096] exist Figure 1 Based on the reference Figure 8 , Fig. 9 and Fig.10 As shown, the vascular puncture sheath of the second embodiment of the present application includes: an outer sheath tube 1, a hemostatic valve 2, a dilator 14, a three-way valve 3, a connecting tube 4 and a wire hanger 5;

[0097] The hemostatic valve 2 is fixedly connected to the proximal end 8 of the outer sheath tube 1;

[0098] The dilator 14 passes through the hemostatic valve 2 and enters the outer sheath 1;

[0099] The three-way valve 3 is connected to the hemostatic valve 2 through a connecting tube 4;

[0100] The thread hanger 5 is sleeved on the outer sheath 1, close to the distal end 6 of the outer sheath 1, and the distal end 6 of the outer sheath 1 passes through the thread hanger 5 and is exposed. The thread hanger 5 is provided with a thread hanging hole 51 and / or a thread hanging groove 52 for fixing the suture thread.

[0101] Specifically, the wire hanging device 5 includes a wire hanging component 54 and a fixing ring 55;

[0102] The wire hanging component 54 includes a sleeve 541 and a disc 53 fixedly connected to the sleeve 541. A central hole 7 is provided between the sleeve 541 and the disc 53. The wire hanging component 54 is sleeved on the outer sheath tube 1 through the central hole 7. The disc 53 is arranged toward the distal end 6 of the outer sheath tube 1. There is a gap between the wire hanging component 54 and the outer sheath tube 1. The disc 53 is provided with a wire hanging hole 51 and / or a wire hanging groove 52 for fixing the suture thread.

[0103] The hole wall of the central hole 7 of the wire hanging member 54 is provided with a receiving groove 9, the proximal end 8 of the receiving groove 9 and the hole wall are stepped to form a proximal limit step 10, and the distal end 6 of the receiving groove 9 is through-set;

[0104] The fixing ring 55 includes a first fixing ring 56 and a second fixing ring 57. The first fixing ring 56 is disposed in the receiving groove 9 and sleeved on the outer sheath tube 1. The first fixing ring 56 and the outer sheath tube 1 are interference-fitted.

[0105] The second fixing ring 57 is sleeved on the outer sheath tube 1 at the proximal end 8 of the sleeve 541 and abuts against the proximal end 8 of the sleeve 541 . The second fixing ring 57 and the outer sheath tube 1 are interference fit.

[0106] Through the above arrangement, the fixing ring 55 can slide on the outer sheath tube 1 and be fixed at any position to adjust the depth of the outer sheath tube 1 entering the puncture point, which is convenient for use.

[0107] Preferably, the distal end 6 of the outer sheath tube 1 is provided with an elbow 13 .

[0108] Preferably, the first fixing ring 56 and the second fixing ring 57 are made of elastic materials, such as elastomers such as silicone and PU.

[0109] Preferably, the axial length of the first fixing ring 56 is preferably the same as the axial length of the accommodating groove 9 .

[0110] In the solution of the third embodiment, the combination of the first fixing ring 56 and the second fixing ring 57 provides axial movement resistance for the movement between the wire hanger 5 and the outer sheath tube 1; the second fixing ring 57 provides circumferential rotation friction resistance for the rotation between the wire hanger 5 and the outer sheath tube 1.

[0111] It should be noted that: since the distal end 6 of the accommodating groove 9 is set to penetrate, the first fixing ring 56 cannot provide axial movement resistance for the axial movement of the wire hanging device 5 toward the proximal end 8; since there is a proximal limit step 10 at the distal end 6 of the accommodating groove 9, the first fixing ring 56 can provide axial movement resistance for the axial movement of the wire hanging device 5 toward the distal end 6. In summary, a second fixing ring 57 is sleeved on the outer sheath tube 1 on the proximal end 8 side of the sleeve 541, and the second fixing ring 57 provides axial movement resistance for the axial movement of the wire hanging device 5 toward the proximal end 8. It can also be understood that the first fixing ring 56 provides axial movement resistance for the axial movement of the wire hanging device 5 toward the distal end 6; the second fixing ring 57 provides axial movement resistance for the axial movement of the wire hanging device 5 toward the proximal end 8.

[0112] Before performing large vessel puncture, if the puncture length needs to be adjusted according to the actual situation of the patient, the specific adjustment method is:

[0113] When it is necessary to increase the puncture length, the operator applies an axial external force to the outer sheath 1, the wire hanger 5, or the outer sheath 1 and the wire hanger 5 at the same time, so that the outer sheath 1 and the wire hanger 5 overcome the axial movement resistance of the second fixing ring 57, and the wire hanger 5 drives the second fixing ring 57 to move synchronously toward the proximal end 8 until the length of the distal end 6 of the outer sheath 1 exposed by the wire hanger 5 reaches the target distance, and the applied axial external force is removed. Then, the first fixing ring 56 is moved along the proximal end 8 so that the first fixing ring 56 re-enters the accommodating groove 9 until the proximal end 8 of the first fixing ring 56 abuts against the proximal limit step 10. Thus, under the action of the axial movement resistance of the first fixing ring 56 and the second fixing ring 57, the wire hanger 5 is maintained at the new axial position on the outer sheath 1, and the outer sheath 1 and the wire hanger 5 are restored to a state where they cannot move axially relative to each other.

[0114] When it is necessary to reduce the puncture length, the operator applies an axial external force to the outer sheath 1, the wire hanger 5, or the outer sheath 1 and the wire hanger 5 at the same time, so that the outer sheath 1 and the wire hanger 5 overcome the axial movement resistance of the first fixed ring 56, and the wire hanger 5 drives the first fixed ring 56 to move synchronously toward the distal end 6 until the length of the distal end 6 of the outer sheath 1 exposed by the wire hanger 5 reaches the target distance, and then the applied axial external force is removed. Then, the second fixed ring 57 is moved along the distal end 6 so that the second fixed ring 57 abuts against the proximal end 8 of the sleeve 541. Thus, under the action of the axial movement resistance of the first fixed ring 56 and the second fixed ring 57, the wire hanger 5 is maintained at a new axial position on the outer sheath 1, and the outer sheath 1 and the wire hanger 5 are restored to a state where they cannot move axially relative to each other.

[0115] During the process of puncturing a large blood vessel, when encountering a blood vessel branch, it is necessary to adjust the position of the elbow 13 of the distal end 6 of the outer sheath tube 1 so that the elbow 13 of the outer sheath tube 1 corresponds to the blood vessel branch to be taken. The specific adjustment method is:

[0116] The operator applies a circumferential rotational external force to the outer sheath tube 1, the wire hanger 5, or the outer sheath tube 1 and the wire hanger 5 at the same time, so that the outer sheath tube 1 and the wire hanger 5 overcome the circumferential rotational friction resistance of the first fixed ring 56, and the wire hanger 5 and the outer sheath tube 1 rotate relative to each other, thereby adjusting the circumferential position of the elbow 13 located at the distal end 6 of the outer sheath tube 1. After adjusting to the desired circumferential position, the applied circumferential rotational external force is removed. Thus, under the action of the circumferential rotational friction resistance of the first fixed ring 56, the wire hanger 5 is maintained at the new circumferential position on the outer sheath tube 1, and the outer sheath tube 1 and the wire hanger 5 are restored to a state where they cannot rotate relative to each other.

[0117] In the solution of the third embodiment, when performing large blood vessel puncture, the operator can more conveniently press the disc 53 against the blood vessel wall through the sleeve 541. Under the action of the axial movement resistance of the first fixing ring 56 and the second fixing ring 57, the blood vessel puncture sheath of the present application can be prevented from being inserted too deeply and contacting the opposite blood vessel wall, causing blood vessel damage. In addition, the axial movement resistance of the first fixing ring 56 and the second fixing ring 57 can also prevent the entire blood vessel puncture sheath from being pushed out by the blood pressure due to the high blood pressure of the large artery, thereby reducing the complexity of the large blood vessel puncture process.

[0118] In the solution of the third embodiment, the puncture length and the position of the elbow 13 can be adjusted according to the usage, and has a wider range of applications.

[0119] In the solution of the third embodiment, the suture near the puncture port can be fixed on the wire hanger 5 through the wire hanging hole 51 and / or the wire hanging groove 52 on the disk body 53, and the connection between the suture and the wire hanger 5 is used to anchor the entire blood vessel puncture sheath, thereby preventing the puncture sheath from falling off due to being accidentally touched. In addition, the setting of the sleeve 541 can also increase the contact area between the wire hanger 5 and the outer sheath tube 1, so that the wire hanger 5 can better anchor the entire blood vessel puncture sheath.

[0120] Figure 8-Figure 10 The disk 53 in the embodiment can be Figure 3 The structure in Figure 3 As shown, preferably, the disk body 53 includes a circular disk body 531 , and the circular disk body 531 is provided with a wire hanging hole 51 and / or a wire hanging groove 52 .

[0121] Figure 8-Figure 10 The disk body 53 in the embodiment can also be used Figure 4 The structure in Figure 4As shown, preferably, the disc body 53 includes a disc body 531 and lugs 532 arranged on both sides of the disc body 531 , and the lugs 532 are provided with wire hanging holes 51 and / or wire hanging grooves 52 .

[0122] It should be noted that: Figure 3 and Figure 4 In the figure, the hanging hole 51 and the hanging groove 52 on the disc body 53 are only for illustration. The disc body 53 can be provided with only the hanging hole 51, only the hanging groove 52, or both the hanging hole 51 and the hanging groove 52, which can both be used for connecting with the suture thread.

[0123] Preferably, the wire hanging groove 52 is a U-shaped groove, the depth direction of the U-shaped groove is arranged along the circumferential direction of the disk body 53, and passes through the outer edge of the disk body 53 to communicate with the outside.

[0124] Embodiment 4:

[0125] exist Figure 1 Based on the reference Fig.11 , Fig.12 and Fig.13 As shown, the vascular puncture sheath of the fourth embodiment of the present application includes: an outer sheath tube 1, a hemostatic valve 2, a dilator 14, a three-way valve 3, a connecting tube 4 and a wire hanger 5;

[0126] The hemostatic valve 2 is fixedly connected to the proximal end 8 of the outer sheath tube 1;

[0127] The dilator 14 passes through the hemostatic valve 2 and enters the outer sheath 1;

[0128] The three-way valve 3 is connected to the hemostatic valve 2 through a connecting tube 4;

[0129] The thread hanger 5 is sleeved on the outer sheath 1, close to the distal end 6 of the outer sheath 1, and the distal end 6 of the outer sheath 1 passes through the thread hanger 5 and is exposed. The thread hanger 5 is provided with a thread hanging hole 51 and / or a thread hanging groove 52 for fixing the suture thread.

[0130] Specifically, the wire hanging device 5 includes a wire hanging component 54 and a fixing ring 55;

[0131] The wire hanging component 54 includes a sleeve 541 and a disc 53 fixedly connected to the sleeve 541. A central hole 7 is provided between the sleeve 541 and the disc 53. The wire hanging component 54 is sleeved on the outer sheath tube 1 through the central hole 7. The disc 53 is arranged toward the distal end 6 of the outer sheath tube 1. There is a gap between the wire hanging component 54 and the outer sheath tube 1. The disc 53 is provided with a wire hanging hole 51 and / or a wire hanging groove 52 for fixing the suture thread.

[0132] A limit fixing groove 11 is provided on the hole wall of the center hole 7, a step arrangement is formed between the proximal end 8 of the limit fixing groove 11 and the hole wall to form a proximal limit step 10, and a step arrangement is formed between the distal end 6 of the limit fixing groove 11 and the hole wall to form a distal limit step 12;

[0133] The fixing ring 55 is arranged in the limiting fixing groove 11 and sleeved on the outer sheath tube 1 , and the fixing ring 55 and the outer sheath tube 1 are interference fit.

[0134] Through the above arrangement, the fixing ring 55 can slide on the outer sheath tube 1 and be fixed at any position to adjust the depth of the outer sheath tube 1 entering the puncture point, which is convenient for use.

[0135] Preferably, the distal end 6 of the outer sheath tube 1 is provided with an elbow 13 .

[0136] Preferably, the fixing ring 55 is made of elastic material, such as elastomers such as silicone, PU, ​​etc.

[0137] Preferably, the axial length of the fixing ring 55 is the same as the axial length of the limiting fixing groove 11 .

[0138] In the solution of the fourth embodiment, the existence of the fixing ring 55 provides axial movement resistance for the movement between the wire hanging device 5 and the outer sheath tube 1; the fixing ring 55 provides circumferential rotation friction resistance for the rotation between the wire hanging device 5 and the outer sheath tube 1.

[0139] It should be noted that: since the limiting fixing groove 11 is a non-through setting, the limiting fixing groove 11 serves as a limit for the fixing ring 55 at both ends. Therefore, the fixing ring 55 can provide axial movement resistance for the axial movement of the wire hanger 5 toward the proximal end 8 or the distal end 6.

[0140] Before performing large vessel puncture, if the puncture length needs to be adjusted according to the actual situation of the patient, the specific adjustment method is:

[0141] When the puncture length needs to be increased, the operator applies an axial external force to the outer sheath 1, the wire hanger 5, or the outer sheath 1 and the wire hanger 5 at the same time, so that the outer sheath 1 and the wire hanger 5 overcome the axial movement resistance of the fixing ring 55, and the wire hanger 5 drives the fixing ring 55 to move synchronously toward the proximal end 8 until the length of the distal end 6 of the outer sheath 1 exposed by the wire hanger 5 reaches the target distance, and the applied axial external force is removed. Thus, under the action of the axial movement resistance of the fixing ring 55, the wire hanger 5 is maintained at a new axial position on the outer sheath 1, and the outer sheath 1 and the wire hanger 5 are restored to a state where they cannot move axially relative to each other.

[0142] When it is necessary to reduce the puncture length, the operator applies an axial external force to the outer sheath 1, the wire hanger 5, or the outer sheath 1 and the wire hanger 5 at the same time, so that the outer sheath 1 and the wire hanger 5 overcome the axial movement resistance of the fixing ring 55, and the wire hanger 5 drives the fixing ring 55 to move synchronously toward the distal end 6 until the length of the distal end 6 of the outer sheath 1 exposed by the wire hanger 5 reaches the target distance, and the applied axial external force is removed. Thus, under the action of the axial movement resistance of the fixing ring 55, the wire hanger 5 is maintained at a new axial position on the outer sheath 1, and the outer sheath 1 and the wire hanger 5 are restored to a state where they cannot move axially relative to each other.

[0143] During the process of puncturing a large blood vessel, when encountering a blood vessel branch, it is necessary to adjust the circumferential position of the elbow 13 of the distal end 6 of the outer sheath tube 1 so that the elbow 13 of the outer sheath tube 1 corresponds to the blood vessel branch to be taken. The specific adjustment method is:

[0144] The operator applies a circumferential rotational external force to the outer sheath tube 1, the wire hanger 5, or the outer sheath tube 1 and the wire hanger 5 at the same time, so that the outer sheath tube 1 and the wire hanger 5 overcome the circumferential rotational friction resistance of the fixing ring 55, and the wire hanger 5 and the outer sheath tube 1 rotate relative to each other, thereby adjusting the circumferential position of the elbow 13 located at the distal end 6 of the outer sheath tube 1. After adjusting to the desired circumferential position, the applied circumferential rotational external force is removed. Thus, under the action of the circumferential rotational friction resistance of the fixing ring 55, the wire hanger 5 is maintained at the new circumferential position on the outer sheath tube 1, and the outer sheath tube 1 and the wire hanger 5 are restored to a state where they cannot rotate relative to each other.

[0145] In the scheme of the fourth embodiment, when performing large blood vessel puncture, the operator holds the sleeve 541, and can more conveniently press the disc 53 against the blood vessel wall through the sleeve 541. Under the action of the axial movement resistance of the fixing ring 55, it can prevent the blood vessel puncture sheath of the present application from being inserted too deeply and contacting the opposite blood vessel wall, causing blood vessel damage. In addition, the axial movement resistance of the fixing ring 55 can also prevent the entire blood vessel puncture sheath from being pushed out by the blood pressure due to the high blood pressure of the large artery, thereby reducing the complexity of the large blood vessel puncture process.

[0146] In the solution of the fourth embodiment, the puncture length and the position of the elbow 13 can be adjusted according to the usage, and has a wider range of applications.

[0147] In the scheme of the fourth embodiment, the suture near the puncture port can be fixed on the wire hanger 5 through the wire hanger hole 51 and / or the wire hanger groove 52 on the disk body 53, and the connection between the suture and the wire hanger 5 is used to anchor the entire blood vessel puncture sheath, thereby preventing the puncture sheath from falling off due to being accidentally touched. In addition, the setting of the sleeve 541 can also increase the contact area between the wire hanger 5 and the outer sheath tube 1, so that the wire hanger 5 can better anchor the entire blood vessel puncture sheath.

[0148] Figure 11-13 The disk 53 in the embodiment can be Figure 3 The structure in Figure 3 As shown, preferably, the disk body 53 includes a circular disk body 531 , and the circular disk body 531 is provided with a wire hanging hole 51 and / or a wire hanging groove 52 .

[0149] Figure 11-13 The disk body 53 in the embodiment can also be used Figure 4 The structure in Figure 4 As shown, preferably, the disc body 53 includes a disc body 531 and lugs 532 arranged on both sides of the disc body 531 , and the lugs 532 are provided with wire hanging holes 51 and / or wire hanging grooves 52 .

[0150] It should be noted that: Figure 3 and Figure 4 In the figure, the hanging hole 51 and the hanging groove 52 on the disc body 53 are only for illustration. The disc body 53 can be provided with only the hanging hole 51, only the hanging groove 52, or both the hanging hole 51 and the hanging groove 52, which can both be used for connecting with the suture thread.

[0151] Preferably, the wire hanging groove 52 is a U-shaped groove, the depth direction of the U-shaped groove is arranged along the circumferential direction of the disk body 53, and passes through the outer edge of the disk body 53 to communicate with the outside.

[0152] Embodiment five:

[0153] The fifth embodiment is a further improvement on the structure of the fourth embodiment. Figure 1 Based on the reference Fig.14 , Fig.15 and Fig.16 As shown, compared with the fourth embodiment, the structure of the wire hanging device 5 of the fifth embodiment is different. Specifically, the wire hanging device 5 includes a wire hanging component 54 and a fixing ring 55;

[0154] The wire hanging component 54 includes a sleeve 541 and two discs 53 fixedly connected to the sleeve 541. A central hole 7 is provided between the sleeve 541 and the two discs 53. The wire hanging component 54 is sleeved on the outer sheath tube 1 through the central hole 7. There is a gap between the wire hanging component 54 and the outer sheath tube 1. Both discs 53 are provided with a wire hanging hole 51 and / or a wire hanging groove 52 for fixing the suture thread.

[0155] A limit fixing groove 11 is provided on the hole wall of the center hole 7, a step arrangement is formed between the proximal end 8 of the limit fixing groove 11 and the hole wall to form a proximal limit step 10, and a step arrangement is formed between the distal end 6 of the limit fixing groove 11 and the hole wall to form a distal limit step 12;

[0156] The fixing ring 55 is arranged in the limiting fixing groove 11 and sleeved on the outer sheath tube 1 , and the fixing ring 55 and the outer sheath tube 1 are interference fit.

[0157] Through the above arrangement, the fixing ring 55 can slide on the outer sheath tube 1 and be fixed at any position to adjust the depth of the outer sheath tube 1 entering the puncture point, which is convenient for use.

[0158] Preferably, the distal end 6 of the outer sheath tube 1 is provided with an elbow 13 .

[0159] Preferably, the fixing ring 55 is made of elastic material, such as elastomers such as silicone, PU, ​​etc.

[0160] Preferably, the axial length of the fixing ring 55 is the same as the axial length of the limiting fixing groove 11 .

[0161] The method for adjusting the puncture length and the method for adjusting the elbow 13 of the distal end 6 of the outer sheath tube 1 in the fifth embodiment are the same as those in the fourth embodiment. Therefore, the effects produced are the same as those in the fourth embodiment and will not be described in detail here.

[0162] The advantage of the thread hanging device 5 of the fifth embodiment over the thread hanging device 5 of the fourth embodiment is that, of the two disks 53, the one disk 53 close to the distal end 6 of the outer sheath tube 1 is against the blood vessel wall, and the suture thread passes through the thread hanging hole 51 and / or the thread hanging groove 52 on the disk 53 and is connected to the thread hanging hole 51 and / or the thread hanging groove 52 on the other disk 53. With this arrangement, since the other disk 53 is at a certain distance from the blood vessel wall, the distance is equivalent to increasing the operating space for the suture thread, and the operator can complete the connection operation of the suture thread with the other disk 53 more quickly and conveniently, thereby improving the operating efficiency.

[0163] Figure 14-16 The disk 53 in the embodiment can be Figure 3 The structure in Figure 3 As shown, preferably, the disk body 53 includes a circular disk body 531 , and the circular disk body 531 is provided with a wire hanging hole 51 and / or a wire hanging groove 52 .

[0164] Figure 14-16 The disk body 53 in the embodiment can also be used Figure 4 The structure in Figure 4 As shown, preferably, the disc body 53 includes a disc body 531 and lugs 532 arranged on both sides of the disc body 531 , and the lugs 532 are provided with wire hanging holes 51 and / or wire hanging grooves 52 .

[0165] It should be noted that: Figure 3 and Figure 4In the figure, the hanging hole 51 and the hanging groove 52 on the disc body 53 are only for illustration. The disc body 53 can be provided with only the hanging hole 51, only the hanging groove 52, or both the hanging hole 51 and the hanging groove 52, which can both be used for connecting with the suture thread.

[0166] Preferably, the wire hanging groove 52 is a U-shaped groove, the depth direction of the U-shaped groove is arranged along the circumferential direction of the disk body 53, and passes through the outer edge of the disk body 53 to communicate with the outside.

[0167] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A vascular puncture sheath, characterized in that: It includes an outer sheath, a hemostatic valve, a three-way valve, a connecting tube, a wire hanger and a dilator; The hemostatic valve is fixedly connected to the proximal end of the outer sheath; The dilator passes through the hemostatic valve and enters the outer sheath; The three-way valve is connected to the hemostatic valve through the connecting pipe; The thread hanger is sleeved on the outer sheath tube, the thread hanger is close to the distal end of the outer sheath tube, the distal end of the outer sheath tube passes through the thread hanger and is exposed, and the thread hanger is provided with a thread hanging hole and / or a thread hanging groove for fixing the suture thread.

2. The vascular puncture sheath according to claim 1, characterized in that: The thread hanger comprises a disc body, which is sleeved on the outer sheath tube and fixedly connected to the outer sheath tube. The disc body is provided with a thread hanging hole and / or a thread hanging groove for fixing the suture thread.

3. The vascular puncture sheath according to claim 1, characterized in that: The wire hanging device comprises a wire hanging component and a fixing ring; The wire hanging component comprises a sleeve and a disc body fixedly connected to the sleeve, a central hole is provided between the sleeve and the disc body, the wire hanging component is sleeved on the outer sheath tube through the central hole, the disc body is arranged toward the distal end of the outer sheath tube, a gap is provided between the wire hanging component and the outer sheath tube, and the disc body is provided with the wire hanging hole and / or wire hanging groove for fixing the suture thread; The proximal end of the fixing ring is sleeved on the outer sheath tube at the proximal end side of the sleeve, and the distal end of the fixing ring is sleeved on the sleeve, so that the fixing ring forms a small-diameter outer sheath tube connecting section and a large-diameter sleeve connecting section, the outer sheath tube connecting section has an interference fit with the outer sheath tube, the sleeve connecting section has an interference fit with the sleeve, or the sleeve connecting section is adhesively connected to the sleeve.

4. The vascular puncture sheath according to claim 1, characterized in that: The wire hanging device comprises a wire hanging component and a fixing ring; The wire hanging component comprises a sleeve and a disc body fixedly connected to the sleeve, a central hole is provided between the sleeve and the disc body, the wire hanging component is sleeved on the outer sheath tube through the central hole, the disc body is arranged toward the distal end of the outer sheath tube, a gap is provided between the wire hanging component and the outer sheath tube, and the disc body is provided with the wire hanging hole and / or the wire hanging groove for fixing the suture thread; The hole wall of the central hole is provided with a receiving groove, the proximal end of the receiving groove and the hole wall are stepped to form a proximal limit step, and the distal end of the receiving groove is through-set; The fixing ring comprises a first fixing ring and a second fixing ring, the first fixing ring is arranged in the containing groove and sleeved on the outer sheath tube, and the first fixing ring and the outer sheath tube are interference fit; The second fixing ring is sleeved on the outer sheath tube at the proximal end side of the sleeve and abuts against the proximal end of the sleeve. The second fixing ring and the outer sheath tube are interference fit.

5. The vascular puncture sheath according to claim 1, characterized in that: The wire hanging device comprises a wire hanging component and a fixing ring; The wire hanging component comprises a sleeve and a disc body fixedly connected to the sleeve, a central hole is provided between the sleeve and the disc body, the wire hanging component is sleeved on the outer sheath tube through the central hole, the disc body is arranged toward the distal end of the outer sheath tube, a gap is provided between the wire hanging component and the outer sheath tube, and the disc body is provided with the wire hanging hole and / or wire hanging groove for fixing the suture thread; A limit fixing groove is provided on the hole wall of the central hole, a step arrangement is formed between the proximal end of the limit fixing groove and the hole wall to form a proximal limit step, and a step arrangement is formed between the distal end of the limit fixing groove and the hole wall to form a distal limit step; The fixing ring is arranged in the limiting fixing groove and sleeved on the outer sheath tube, and the fixing ring and the outer sheath tube are interference fit.

6. The vascular puncture sheath according to claim 1, characterized in that: The wire hanging device comprises a wire hanging component and a fixing ring; The wire hanging component comprises a sleeve and two discs fixedly connected to both ends of the sleeve, a central hole is provided between the sleeve and the two discs, the wire hanging component is sleeved on the outer sheath through the central hole, a gap is provided between the wire hanging component and the outer sheath, and the two discs are provided with the wire hanging hole and / or wire hanging groove for fixing the suture thread; A limit fixing groove is provided on the hole wall of the central hole, a step arrangement is formed between the proximal end of the limit fixing groove and the hole wall to form a proximal limit step, and a step arrangement is formed between the distal end of the limit fixing groove and the hole wall to form a distal limit step; The fixing ring is arranged in the limiting fixing groove and sleeved on the outer sheath tube, and the fixing ring and the outer sheath tube are interference fit.

7. The vascular puncture sheath according to any one of claims 2 to 6, characterized in that: The disc body comprises a circular disc body, and the circular disc body is provided with the wire hanging hole and / or the wire hanging groove.

8. The vascular puncture sheath according to any one of claims 2 to 6, characterized in that: The disc body comprises a disc body and lugs arranged on both sides of the disc body, and the lugs are provided with the wire hanging holes and / or the wire hanging grooves.

9. The vascular puncture sheath according to claim 1, characterized in that: The wire hanging groove is a U-shaped groove.

10. The vascular puncture sheath according to any one of claims 3 to 6, characterized in that: The fixing ring can slide on the outer sheath tube and be fixed at any position to adjust the depth of the outer sheath tube entering the puncture point, which is convenient for use; the fixing ring is made of elastic material.

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