Y-shaped blood vessel sheath with lock

Abstract

The utility model provides a Y-shaped blood vessel sheath with a lock, which comprises a blood vessel sheath assembly and a sheath seat assembly, the blood vessel sheath assembly comprises a Y-shaped sheath tube, two infusion tubes and two expansion tubes; wherein the infusion tubes are respectively arranged on one side of the Y-shaped sheathing canal; according to the vascular sheath, the Y-shaped sheath tube is matched with the sheath base assembly, so that the vascular sheath is provided with the two main sheath tubes, operation can be carried out in the two main sheath tubes when double-path operation is carried out, when a guide wire needs to be locked, power is provided for the locking mechanism only by pressing the driving mechanism, and operation is convenient. The locking mechanism locks catheters and / or guide wires in the two main sheathing tubes under the action of pressure, so that the guide wires in the sheaths are prevented from uncontrollably moving back and forth in the operation process, the operation risk is reduced, the situation of blood exudation caused by a groove formed when double-path operation is performed in the conventional single-cavity blood vessel sheath is avoided, and the operation efficiency is improved. And the operation safety guarantee is increased.

Description

Technical Field

[0001] The utility model relates to a vascular sheath, in particular to a locked Y-shaped vascular sheath, belonging to the technical field of vascular sheaths. Background Art

[0002] Vascular sheath is a medical device used in cardiovascular interventional surgery. It is a soft, flexible tubular structure, usually composed of a catheter and a sheath. Vascular sheath is used to provide a channel in the blood vessel to keep the blood vessel open, provide a stable channel for catheters and surgical tools, and facilitate doctors to operate. The soft and flexible nature of the vascular sheath can reduce damage to the inner wall of the blood vessel, reduce surgical risks, and can also reduce blood loss during surgery and reduce the risk of postoperative bleeding.

[0003] The traditional Y-shaped vascular sheath usually consists of a main sheath and a side branch sheath. The main sheath and the side branch sheath merge near the entrance of the blood vessel to form a Y shape. Since the catheter and the guidewire can only be inserted through the main sheath, when two guidewires are needed for double operation during surgery, since the two guidewires (or one catheter and one guidewire or two catheters) are in the same main sheath at the same time, the shape is irregular and grooves will be formed. Blood will overflow through the grooves, increasing surgical bleeding. In addition, the locking method of the guidewire is mostly to squeeze and lock the catheter or guidewire with a hard structure, which makes the catheter or guidewire very easy to bend or deform under the action of pressure, affecting the normal use of the catheter guidewire. Therefore, a locked Y-shaped vascular sheath is proposed. Utility Model Content

[0004] In view of this, the utility model provides a Y-shaped vascular sheath with a lock to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0005] The technical solution of the embodiment of the utility model is implemented as follows: a locked Y-shaped vascular sheath comprises a vascular sheath assembly and a sheath seat assembly, wherein the vascular sheath assembly comprises a Y-shaped sheath tube, two infusion tubes and two dilation tubes;

[0006] The two infusion tubes are arranged on the outside of the Y-shaped sheath tube, the two dilation tubes are slidably connected to the inside of the Y-shaped sheath tube, the sheath seat assembly is connected to the two ends of the Y-shaped sheath tube, the inside of the sheath seat assembly is slidably connected with a driving mechanism, a locking mechanism is installed between the driving mechanism and one side of the inner wall of the sheath seat assembly, and a reset mechanism is installed between the driving mechanism and the other side of the inner wall of the sheath seat assembly;

[0007] Wherein, the sheath seat assembly is used to limit the two expansion tubes respectively;

[0008] Wherein, the driving mechanism is used to provide power to the locking mechanism under the action of pressure, and to limit the locking mechanism by connecting with the sheath seat assembly;

[0009] Wherein, the locking mechanism is used to lock the catheter or guidewire in the sheath seat assembly by means of silicone expansion and extrusion;

[0010] The reset mechanism is used to reset the driving mechanism, release the limit of the locking mechanism and unlock the guide wire.

[0011] Further preferably, the sheath seat assembly comprises a first sheath seat tube, a second sheath seat tube and two inner catheters;

[0012] Among them, one end of the first sheath seat tube is connected to one end of the Y-shaped sheath tube, the second sheath seat tube is connected to the other end of the Y-shaped sheath tube, one end of the two infusion tubes is respectively connected to one side of the outer wall of the first sheath seat tube and the second sheath seat tube, the two inner catheters are respectively fixedly connected to the inside of the first sheath seat tube and the second sheath seat tube, and the outer walls of the two expansion tubes are respectively slidably connected to the inner walls of the two inner catheters.

[0013] Further preferably, the driving mechanism comprises two threaded caps, two connecting plates, a plurality of connecting rods and two sliders;

[0014] The inner side walls of the two threaded caps are respectively slidably connected to the outer side walls of the two inner guide tubes, and the inner side walls of the two threaded caps are respectively threadedly connected to the outer side walls of the first sheath seat tube and the second sheath seat tube.

[0015] Further preferably, the two connecting plates are rotatably connected to the top of the inner walls of the two threaded caps, respectively, the two sliders are slidably connected to the inner walls of the first sheath seat tube and the second sheath seat tube, respectively, and a number of connecting rods are fixedly connected between the two connecting plates and the two sliders, and the outer side walls of a number of connecting rods are slidably connected to the inner walls of the first sheath seat tube and the second sheath seat tube, respectively.

[0016] Further preferably, the two locking mechanisms each include two air bags, two superelastic silicone ring bands and two through grooves;

[0017] Among them, the two through grooves are respectively opened on the inner walls of the two inner tubes, the two airbags are respectively fixedly connected to the outer walls of the two inner tubes, the two super-elastic silicone ring bands are respectively fixedly connected to the inner walls of the two airbags, and the two super-elastic silicone ring bands are respectively arranged corresponding to the two through grooves.

[0018] Further preferably, the reset mechanism includes two storage slots and two springs;

[0019] Among them, the two storage grooves are respectively opened on the outside of the two sliders, one end of the two springs is respectively fixedly connected to the inner wall of the first sheath seat tube and the second sheath seat tube, and the other end of the two springs is respectively fixedly connected to one side of the two sliders.

[0020] Further preferably, the outer side walls of the first sheath seat tube and the second sheath seat tube are both symmetrically fixedly connected with two supporting ears.

[0021] Further preferably, a guide groove is provided on the inner side wall of the Y-shaped sheath tube, the outer side wall of the expansion tube is slidably connected to the inner side wall of the guide groove, and end caps are installed on one end of the two infusion tubes.

[0022] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0023] 1. The utility model provides a Y-shaped sheath tube and a sheath seat assembly so that the vascular sheath has two main sheath tubes, so that when performing a dual-path operation, the operation can be performed in the two main sheath tubes respectively. When the catheter or the guide wire needs to be locked, it is only necessary to provide power to the locking mechanism by pressing the driving mechanism, so that the locking mechanism can lock the catheter and / or the guide wire in the two main sheath tubes respectively under the action of pressure, thereby preventing the uncontrollable forward and backward movement of the guide wire in the sheath during the operation, reducing the surgical risk, and avoiding the formation of grooves that cause blood seepage when performing a dual-path operation in a conventional single-lumen vascular sheath, thereby increasing the safety of the operation.

[0024] Second, the utility model uses a locking mechanism to lock the guide wire by means of silicone expansion and extrusion, so that the guide wire is more evenly stressed during the locking operation, thus avoiding bending or deformation of the guide wire and increasing protection for the catheter or guide wire within the sheath.

[0025] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a structural diagram of the utility model;

[0028] Figure 2 It is a schematic cross-sectional structure diagram of the utility model from a first viewing angle;

[0029] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure of region A;

[0030] Figure 4 It is a cross-sectional structural schematic diagram of the utility model from a second viewing angle;

[0031] Figure 5 It is an axonometric view of the slider and the airbag of the utility model.

[0032] Figure numerals: 1. vascular sheath assembly; 2. sheath seat assembly; 3. driving mechanism; 4. locking mechanism; 5. resetting mechanism; 101. Y-shaped sheath tube; 102. infusion tube; 103. dilation tube; 201. first sheath seat tube; 202. second sheath seat tube; 203. inner catheter; 301. threaded cap; 302. connecting plate; 303. connecting rod; 304. slider; 401. airbag; 402. super elastic silicone ring band; 403. through groove; 501. storage groove; 502. spring; 61. support ear; 62. end cap; 63. guide groove. DETAILED DESCRIPTION

[0033] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0034] It should be noted that the terms "first", "second", "symmetrical", "array", etc. are only used to distinguish between description and position description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the definition of "first", "symmetrical", etc. can explicitly or implicitly include one or more of these features; similarly, when the number of certain features is not limited in the form of words such as "two" or "three", it should be noted that this feature also explicitly or implicitly includes one or more feature quantities.

[0035] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0036] Embodiment 1

[0037] like Figure 1-5As shown, the embodiment of the utility model provides a locked Y-shaped vascular sheath, comprising a vascular sheath component 1 and a sheath seat component 2, wherein the vascular sheath component 1 comprises a Y-shaped sheath tube 101, two infusion tubes 102 and two dilation tubes 103;

[0038] Among them, two infusion tubes 102 are arranged on the outside of the Y-shaped sheath tube 101, two expansion tubes 103 are slidably connected to the inside of the Y-shaped sheath tube 101, the sheath seat assembly 2 is connected to both ends of the Y-shaped sheath tube 101, and the inside of the sheath seat assembly 2 is slidably connected with a driving mechanism 3, a locking mechanism 4 is installed between the driving mechanism 3 and one side of the inner wall of the sheath seat assembly 2, and a reset mechanism 5 is installed between the driving mechanism 3 and the other side of the inner wall of the sheath seat assembly 2;

[0039] The sheath seat assembly 2 is used to limit the two expansion tubes 103 respectively;

[0040] The driving mechanism 3 is used to provide power to the locking mechanism 4 under the action of pressure, and to limit the locking mechanism 4 by connecting with the sheath seat assembly 2;

[0041] The locking mechanism 4 is used to lock the catheter or guidewire in the sheath seat assembly 2 by means of silicone expansion and extrusion;

[0042] The reset mechanism 5 is used to reset the driving mechanism 3, release the limit of the locking mechanism 4 and unlock the guide wire.

[0043] In one embodiment, the sheath seat assembly 2 includes a first sheath seat tube 201, a second sheath seat tube 202 and two inner catheters 203;

[0044] Among them, one end of the first sheath seat tube 201 is connected to one end of the Y-shaped sheath tube 101, the second sheath seat tube 202 is connected to the other end of the Y-shaped sheath tube 101, one end of the two infusion tubes 102 are respectively connected to one side of the outer wall of the first sheath seat tube 201 and the second sheath seat tube 202, the two inner catheters 203 are respectively fixedly connected to the inside of the first sheath seat tube 201 and the second sheath seat tube 202, the outer walls of the two expansion tubes 103 are respectively slidably connected to the inner walls of the two inner catheters 203, and the outer walls of the first sheath seat tube 201 and the second sheath seat tube 202 are symmetrically fixedly connected with two supporting ears 61; by using the supporting ears 61, it is easier for medical personnel to hold the first sheath seat tube 201 and the second sheath seat tube 202.

[0045] In one embodiment, the driving mechanism 3 includes two threaded caps 301, two connecting plates 302, a plurality of connecting rods 303 and two sliders 304;

[0046] The inner walls of the two threaded caps 301 are respectively slidably connected to the outer walls of the two inner guide tubes 203, the inner walls of the two threaded caps 301 are respectively threadedly connected to the outer walls of the first sheath seat tube 201 and the second sheath seat tube 202, the two connecting plates 302 are respectively rotatably connected to the top of the inner walls of the two threaded caps 301, the two sliders 304 are respectively slidably connected to the inner walls of the first sheath seat tube 201 and the second sheath seat tube 202, a plurality of connecting rods 303 are respectively fixedly connected between the two connecting plates 302 and the two sliders 304, and a plurality of connecting rods 303 are respectively fixedly connected between the two connecting plates 302 and the two sliders 304. The outer side walls of the rod 303 are slidably connected to the inner side walls of the first sheath seat tube 201 and the second sheath seat tube 202 respectively; by pressing the threaded cap 301, the connecting plate 302 is used to drive the connecting rod 303 to move, and the moving connecting rod 303 drives the slider 304 to move, and the moving slider 304 drives the spring 502 to move and squeeze one side of the airbag 401. When the threaded cap 301 is pressed to the limit, the threaded cap 301 is rotated to connect with the outer wall of the first sheath seat tube 201 via the thread, so as to lock the deformed airbag 401.

[0047] In one embodiment, the two locking mechanisms 4 each include two air bags 401, two super elastic silicone ring bands 402 and two through grooves 403;

[0048] Among them, two through grooves 403 are respectively opened on the inner walls of the two inner catheters 203, the two air bags 401 are respectively fixedly connected to the outer walls of the two inner catheters 203, and the two super elastic silicone ring bands 402 are respectively fixedly connected to the inner walls of the two air bags 401, and the two super elastic silicone ring bands 402 are respectively arranged corresponding to the two through grooves 403; the air pressure in the air bag 401 is used to drive the super elastic silicone ring band 402 to expand, and the expanded super elastic silicone ring band 402 passes through the through groove 403 to omnidirectionally squeeze and lock the guide wire.

[0049] In one embodiment, the reset mechanism 5 includes two storage slots 501 and two springs 502;

[0050] Among them, two storage grooves 501 are respectively opened on the outside of the two sliders 304, one end of the two springs 502 is respectively fixedly connected to the inner wall of the first sheath seat tube 201 and the second sheath seat tube 202, and the other end of the two springs 502 is respectively fixedly connected to one side of the two sliders 304; the stretched spring 502 drives the slider 304, the connecting rod 303, the connecting plate 302 and the threaded cap 301 to reset, thereby releasing the lock of the airbag 401.

[0051] In one embodiment, a guide groove 63 is provided on the inner wall of the Y-shaped sheath 101, the outer wall of the expansion tube 103 is slidably connected to the inner wall of the guide groove 63, and an end cap 62 is installed at one end of the infusion tube 102; the end cap 62 is used to seal and protect one end of the infusion tube 102, and the guide groove 63 is provided to guide the expansion tube 103 inserted into the Y-shaped sheath 101.

[0052] Embodiment 2

[0053] The embodiment of the utility model also provides a locked Y-shaped vascular sheath, which has basically the same structure as the first embodiment, except that only one expansion tube 103 can be inserted into the Y-shaped sheath tube 101 at the same time to reduce the outer diameter of the Y-shaped sheath tube 101, and the Y-shaped sheath tube 101 does not have a guide groove 63 to allow the outer wall of the expansion tube 103 to fit the inner wall of the Y-shaped sheath tube 101.

[0054] When the utility model is in operation, the expansion tube 103 is inserted into the inner catheter 203 of the first sheath seat tube 201 for limiting the position, so as to perform the insertion operation of the guide wire.

[0055] When the guide wire needs to be locked, the threaded cap 301 is pressed to utilize the connecting plate 302 to drive the connecting rod 303 to move, and the moving connecting rod 303 drives the slider 304 to move, and the moving slider 304 drives the spring 502 to move and squeeze one side of the airbag 401 to increase the pressure in the airbag 401, so that the super elastic silicone ring band 402 can be expanded under the action of pressure, and then the expanded super elastic silicone ring band 402 is used to pass through the through groove 403 to omnidirectionally squeeze and lock the guide wire, so that the force on the guide wire is more uniform, the bending or deformation of the guide wire is avoided, the protection of the guide wire is increased, and the moving spring 502 is stretched.

[0056] When the threaded cap 301 is pressed and moved to the limit, the threaded cap 301 is rotated to connect with the outer wall of the first sheath seat tube 201 by means of the thread, so as to lock the deformed airbag 401 .

[0057] When it is necessary to infuse the Y-shaped sheath 101, one end of the infusion tube 102 is opened by moving the end cap 62 so as to connect the infusion tube 102 to the infusion device pipeline, so that the liquid can enter the patient's body through the infusion tube 102 and the Y-shaped sheath 101.

[0058] When double operation is required, another dilation tube 103 is inserted into the inner catheter 203 of the second sheath seat tube 202, and then the above operation is repeated to lock the other guide wire inside the second sheath seat tube 202, thereby avoiding the formation of grooves and blood seepage when the two guide wires are locked at the same time.

[0059] When it is necessary to unlock the locked guide wire, the threaded cap 301 is rotated in the opposite direction to separate from the first sheath seat tube 201 or the second sheath seat tube 202 by means of the thread, and then the slider 304, the connecting rod 303, the connecting plate 302 and the threaded cap 301 are reset by the stretched spring 502, thereby releasing the lock on the airbag 401, resetting the deformed airbag 401 and the super elastic silicone ring band 402, and releasing the lock on the guide wire.

[0060] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A locked Y-shaped vascular sheath, comprising a vascular sheath component (1) and a sheath seat component (2), characterized in that: The vascular sheath assembly (1) comprises a Y-shaped sheath tube (101), two infusion tubes (102) and two dilation tubes (103); The two infusion tubes (102) are arranged on the outside of the Y-shaped sheath tube (101), the two expansion tubes (103) are both slidably connected to the inside of the Y-shaped sheath tube (101), the sheath seat assembly (2) is connected to both ends of the Y-shaped sheath tube (101), the inside of the sheath seat assembly (2) is slidably connected with a driving mechanism (3), a locking mechanism (4) is installed between the driving mechanism (3) and one side of the inner wall of the sheath seat assembly (2), and a resetting mechanism (5) is installed between the driving mechanism (3) and the other side of the inner wall of the sheath seat assembly (2); Wherein, the sheath seat assembly (2) is used to limit the positions of the two expansion tubes (103) respectively; The driving mechanism (3) is used to provide power to the locking mechanism (4) under the action of pressure, and to limit the locking mechanism (4) by connecting with the sheath seat assembly (2); The locking mechanism (4) is used to lock the catheter or guidewire in the sheath seat assembly (2) by means of silicone expansion and extrusion; The reset mechanism (5) is used to reset the drive mechanism (3), release the limit of the locking mechanism (4) and unlock the guide wire.

2. The locking Y-shaped vascular sheath according to claim 1, characterized in that: The sheath seat assembly (2) comprises a first sheath seat tube (201), a second sheath seat tube (202) and two inner catheters (203); One end of the first sheath seat tube (201) is connected to one end of the Y-shaped sheath tube (101), the second sheath seat tube (202) is connected to the other end of the Y-shaped sheath tube (101), one end of the two infusion tubes (102) are respectively connected to one side of the outer wall of the first sheath seat tube (201) and the second sheath seat tube (202), the two inner catheters (203) are respectively fixedly connected to the inside of the first sheath seat tube (201) and the second sheath seat tube (202), and the outer walls of the two expansion tubes (103) are respectively slidably connected to the inner walls of the two inner catheters (203).

3. The locking Y-shaped vascular sheath according to claim 2, characterized in that: The driving mechanism (3) comprises two threaded caps (301), two connecting plates (302), a plurality of connecting rods (303) and two sliding blocks (304); The inner side walls of the two threaded caps (301) are respectively slidably connected to the outer side walls of the two inner guide tubes (203), and the inner side walls of the two threaded caps (301) are respectively threadedly connected to the outer side walls of the first sheath seat tube (201) and the second sheath seat tube (202).

4. The locking Y-shaped vascular sheath according to claim 3, characterized in that: The two connecting plates (302) are rotatably connected to the top of the inner side walls of the two threaded caps (301), respectively; the two sliding blocks (304) are slidably connected to the inner side walls of the first sheath seat tube (201) and the second sheath seat tube (202), respectively; the plurality of connecting rods (303) are fixedly connected between the two connecting plates (302) and the two sliding blocks (304), respectively; and the outer side walls of the plurality of connecting rods (303) are slidably connected to the inner side walls of the first sheath seat tube (201) and the second sheath seat tube (202), respectively.

5. The locking Y-shaped vascular sheath according to claim 2, characterized in that: The two locking mechanisms (4) each comprise two air bags (401), two super elastic silicone ring bands (402) and two through grooves (403); The two through grooves (403) are respectively opened on the inner side walls of the two inner tubes (203); the two airbags (401) are respectively fixedly connected to the outer side walls of the two inner tubes (203); the two super elastic silicone ring bands (402) are respectively fixedly connected to the inner side walls of the two airbags (401); and the two super elastic silicone ring bands (402) are respectively arranged corresponding to the two through grooves (403).

6. The locking Y-shaped vascular sheath according to claim 3, characterized in that: The reset mechanism (5) comprises two storage slots (501) and two springs (502); The two storage grooves (501) are respectively opened on the outside of the two sliders (304); one end of the two springs (502) is respectively fixedly connected to the inner wall of the first sheath seat tube (201) and the second sheath seat tube (202); and the other end of the two springs (502) is respectively fixedly connected to one side of the two sliders (304).

7. The locking Y-shaped vascular sheath according to claim 2, characterized in that: The outer side walls of the first sheath seat tube (201) and the second sheath seat tube (202) are both symmetrically and fixedly connected with two supporting ears (61).

8. The locking Y-shaped vascular sheath according to claim 1, characterized in that: The inner wall of the Y-shaped sheath tube (101) is provided with a guide groove (63), the outer wall of the expansion tube (103) is slidably connected to the inner wall of the guide groove (63), and one end of each of the two infusion tubes (102) is installed with an end cap (62).

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