Blood vessel puncture sheath and blood vessel puncture device comprising same

Abstract

The utility model relates to the field of medical instruments, in particular to a blood vessel puncture sheath and a blood vessel puncture device comprising the same, which comprise a longitudinally extending puncture tube, a guide tube communicated with the lower end of the puncture tube in a swinging manner, and a puncture seat communicated with the upper end of the puncture tube and used for guiding a surgical instrument to insert; a ball head is arranged at the bottom end of the puncture tube, a ball socket wrapping the periphery of the ball head is arranged at the top end of the guide tube, and channels communicated with the puncture tube are correspondingly arranged on the ball head and the ball socket. The puncture tube and the guide tube are connected in a swinging mode through the ball head and the ball socket. The puncture sheath can be stably punctured in a blood vessel in the operation process, the falling phenomenon does not occur, and in addition, the phenomena that a traditional sheath tube is difficult to enter other blood vessels in the blood vessel and the direction of a puncture sheath is difficult to turn are improved.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, and particularly relates to a vascular puncture sheath. Background Art

[0002] A vascular puncture sheath is a medical device used for vascular puncture. Its main function is to establish a surgical channel from the skin to the blood vessel, enabling surgical instruments such as catheters and guide wires to enter the blood vessel and reach the lesion site.

[0003] Currently, there are many problems with common vascular puncture sheaths during the surgical process. For example, it is difficult for the sheath tube to stably remain in the blood vessel during the operation, and the phenomenon of the sheath tube falling off during the operation often occurs, which requires medical staff to perform secondary puncture on the patient, increasing the surgical difficulty and the harm to the patient.

[0004] Secondly, it is difficult to guide the sheath tube punctured in the blood vessel into other blood vessels. Since it is necessary to puncture the sheath tube into multiple blood vessels to establish a surgical channel during the operation, and clinicians only rely on the guide wire to guide the overall swing of the sheath tube in the blood vessel to enter other blood vessels. For this surgical process, it is difficult and time-consuming.

[0005] In addition, when the puncture point is selected in the middle section of the blood vessel during the operation, after the clinician completes the thrombus removal operation from the middle section to the upper section of the blood vessel, it is also necessary to perform the thrombus removal operation from the middle section to the lower section of the blood vessel. The conventional operation requires removing the puncture sheath and re-puncturing after reversing the puncture direction. In this process, it is very easy to cause multiple puncture points on the patient, increasing the harm to the patient. Summary of the Invention

[0006] The purpose of the utility model is to provide a vascular puncture sheath, which can stably remain in the blood vessel during the operation without falling off. In addition, it also improves the phenomenon that the traditional sheath tube is difficult to enter other blood vessels in the blood vessel and the difficulty of reversing the direction of the puncture sheath.

[0007] The purpose of the utility model is achieved through the following technical solutions:

[0008] It includes a longitudinally extending puncture tube, a guiding tube swing-connected to the lower end of the puncture tube, and a puncture seat connected to the upper end of the puncture tube and used for guiding the insertion of surgical instruments.

[0009] A ball head is provided at the bottom end of the puncture tube, a ball socket covering the periphery of the ball head is provided at the top end of the guiding tube, and channels communicating with the puncture tube are correspondingly provided on the ball head and the ball socket; the puncture tube and the guiding tube are swing-connected through the ball head and the ball socket.

[0010] Compared with the prior art, the advantages of the utility model are as follows:

[0011] 1. By providing a ball head and a ball socket with corresponding puncture tube communication channels, the puncture tube and the guiding tube are swing-connected, increasing the flexibility of the puncture sheath, reducing the difficulty of the puncture sheath entering other blood vessels during the operation, and improving the surgical efficiency;

[0012] 2. Through the cooperation of two balloon assemblies, balloon tracheas and air valves arranged on the outer wall of the guiding tube, after the external instrument inflates the two balloon tracheas simultaneously through the air valve, both balloon A and balloon B expand and bulge against the inner wall of the blood vessel, realizing that the present invention does not fall off inside the blood vessel during the operation;

[0013] 3. Through the cooperation of two balloon assemblies, balloon tracheas and air valves arranged on the outer wall of the guiding tube, the external instrument injects gas or extracts gas into a single balloon trachea through the air valve to control the expansion and bulging or contraction of the obliquely arranged balloon A and balloon B on the guiding tube, so that the balloon A and balloon B inserted into the blood vessel exert acting forces and reaction forces on each other between the balloon A and balloon B and the inner wall of the blood vessel, so as to realize the left and right swing displacement of the guiding tube in the blood vessel with the ball head and ball socket as the base point, thereby assisting the guide wire to guide the guiding tube into other blood vessels. Description of the Drawings

[0014] Figure 1 is the front view of a blood vessel puncture sheath of the present invention;

[0015] Figure 2 is the left view of a blood vessel puncture sheath of the present invention;

[0016] Figure 3 is the right view of a blood vessel puncture sheath of the present invention;

[0017] Figure 4 is the top view of a blood vessel puncture sheath of the present invention;

[0018] Figure 5 is the partial structure disassembly view of a blood vessel puncture sheath of the present invention;

[0019] Figure 6 is the structural schematic diagram of the guiding tube of the present invention;

[0020] Figure 7 is the schematic diagram of the left swing of the guiding tube during the operation of the present invention;

[0021] Figure 8 is the schematic diagram of the right swing of the guiding tube during the operation of the present invention;

[0022] Figure 9 is the schematic diagram of the fixation of the guiding tube during the operation of the present invention;

[0023] Figure 10 is the structural schematic diagram of a blood vessel puncture device of the present invention;

[0024] Figure 11 It is an exploded view of the structure of a blood vessel puncture device of the present utility model.

[0025] Label description: 1 puncture tube, 2 guiding tube, 21 closing part, 3 puncture seat, 31 handle part, 32 liquid inlet tube, 4 ball head, 5 ball socket, 6 balloon assembly, 61 balloon A, 62 balloon B, 63 ventilation groove, 7 balloon trachea, 8 air valve, 9 puncture core rod, 91 puncture rod, 92 holding handle, 10 main blood vessel, 11 branch blood vessel. Specific embodiments

[0026] The content of the present utility model will be described in detail below in conjunction with the accompanying drawings of the specification and embodiments:

[0027] As Figures 1-6 shown, it is a schematic diagram of an embodiment of a blood vessel puncture sheath provided by the present utility model, which includes a longitudinally extending puncture tube 1, a guiding tube 2 swing-connected to the lower end of the puncture tube 1, and a puncture seat 3 connected to the upper end of the puncture tube 1 and used to guide the insertion of surgical instruments;

[0028] A ball head 4 is provided at the bottom end of the puncture tube 1, a ball socket 5 covering the periphery of the ball head 4 is provided at the top end of the guiding tube 2, and channels corresponding to each other on the ball head 4 and the ball socket 5 are communicated with the puncture tube 1; the puncture tube 1 and the guiding tube 2 are swing-connected through the ball head 4 and the ball socket 5.

[0029] It further includes two balloon assemblies 6 symmetrically arranged on the left and right sides of the outer wall of the guiding tube 2 and two balloon tracheas 7 respectively communicated with the corresponding balloon assemblies 6 and extending longitudinally, and an air valve 8 is provided at the upper end of the balloon trachea 7.

[0030] The balloon assembly 6 includes a balloon A 61, a balloon B 62 obliquely arranged on the outer wall surface of the guiding tube 2, and a ventilation groove 63 communicating the balloon A 61 and the balloon B 62. The balloon A 61 is communicated with the balloon trachea 7, and the ventilation groove 63 is opened in the tube wall of the guiding tube 2.

[0031] The balloon trachea 7 extends along the lumen of the puncture tube 1 and passes through the upper tube wall of the puncture tube 1.

[0032] A sealing treatment is performed at the connection between the balloon trachea 7 and the puncture tube 1, or the balloon trachea 7 and the puncture tube 1 are directly processed into one body at the connection.

[0033] The length of the balloon trachea 7 is set to be sufficient to enable the guiding tube 2 to swing, and the balloon trachea 7 is made of a flexible material that can be extended.

[0034] The ventilation groove 63 extends spirally along the tube wall of the guiding tube 2, and its purpose is to smoothly guide the gas injected into the balloon A 61 through the balloon trachea 7 into the balloon B 62.

[0035] A handle 31 for easy holding is provided on the left outer wall of the puncture seat 3 , and a liquid inlet pipe 32 connected with the puncture seat 3 is provided on the right outer wall of the puncture seat 3 .

[0036] The liquid inlet tube 32 is connected to an external pipeline and is used to transport drugs (such as heparin and other anti-thrombotic drugs) into the puncture tube 1.

[0037] The lower section of the guide tube 2 has a closing portion 21 with a gradually decreasing diameter.

[0038] The closing portion 21 is made by shrinking the guide tube 2 .

[0039] The use principle of a vascular puncture sheath provided by the utility model is roughly as follows:

[0040] 1. If Figures 7-8 As shown, when it is necessary to control the swing and displacement of the guide tube in the blood vessel, the guide wire is assisted to guide the end of the guide tube 2 from the main blood vessel 10 into the secondary blood vessel 11;

[0041] An external guide wire is inserted into the puncture tube 1 and extends out of the guide tube 2. The guide wire is controlled to make the guide tube 2 swing slightly. In order to make the guide tube 2 swing more smoothly, an external instrument (such as a syringe) is used to inject or drain air into the single balloon air tube 7 through the air valve 8, and the balloons A61 and B62 obliquely arranged on the guide tube 2 are controlled to expand or contract, so that the balloons A61 and B62 punctured in the blood vessel exert action and reaction forces on the inner wall of the blood vessel, so that the guide tube 2 uses the ball head 4 and the ball socket 5 as the swing base point, and swings left and right in the blood vessel until the end of the guide tube 2 is displaced to the vicinity of the branch blood vessel 11, and then the guide tube 2 that has been displaced to the vicinity of the branch blood vessel 11 is guided to penetrate into the branch blood vessel 11 through the guide wire inserted in the guide tube 2.

[0042] 2. If Figure 9 As shown, the utility model needs to be stably maintained in the blood vessel during the operation without falling off;

[0043] Use an external instrument (such as a syringe) to inject or drain air into the two balloon tracheas 7 through the air valve 8 at the same time, and control the balloon components 6 on both sides of the guide tube 2 to expand or contract at the same time. When the two balloon components 6 are inflated, the balloons A61 and balloon B62 on both sides swell and abut against the inner wall of the blood vessel, so that the utility model can remain stable in the blood vessel during the operation and will not fall off. When the two balloon components 6 are drained, the balloons A61 and balloon B62 on both sides shrink and become smaller, thereby releasing the abutment with the inner wall of the blood vessel. At this time, the utility model can be smoothly removed from the blood vessel.

[0044] 3. When the puncture point is selected in the middle section of the blood vessel during the operation, after the clinician completes the thrombus removal operation from the middle section to the upper section of the blood vessel and is about to perform the thrombus removal operation from the middle section to the lower section of the blood vessel;

[0045] First, withdraw the puncture sheath in the blood vessel along the original puncture route until the puncture tube 1 is completely withdrawn from the patient's blood vessel. Then, gently lift the puncture tube 1 and partially pull out the ball head 4, ball socket 5, and a part of the guiding tube 2 from the blood vessel. At this time, there is still a remaining part of the guiding tube 2 puncturing in the blood vessel. Subsequently, the clinician swings the upper end of the guiding tube 2, and with the cooperation of the ball head 4 and the ball socket 5, the remaining part of the guiding tube 2 puncturing in the blood vessel is redirected inside the blood vessel, avoiding the practice of re-puncturing and creating multiple puncture points on the patient, and reducing the harm to the patient.

[0046] As Figures 10-11 shown, it is a schematic diagram of an embodiment of a blood vessel puncture device provided by the present utility model, which includes the above-mentioned blood vessel puncture sheath and a puncture mandrel 9;

[0047] The puncture mandrel 9 includes a longitudinally extending puncture rod 91 and a gripping handle 92 fixedly arranged at the upper end of the puncture rod 91. The puncture rod 91 penetrates into the upper end of the puncture seat 3 and passes out through the lower end of the guiding tube 2. The lower end of the puncture rod 91 is a conical structure, and a longitudinally extending channel for guiding a guide wire to penetrate is provided on the puncture mandrel 9.

[0048] The length of the puncture rod 91 is greater than the total length of the puncture tube 1 and the guiding tube 2.

[0049] The gripping handle 92 is provided with anti-slip patterns for increasing friction.

[0050] The usage method of a blood vessel puncture device provided by the present utility model is generally as follows:

[0051] The clinician selects a suitable puncture point on the patient and optionally cuts the skin at the puncture point according to the actual situation. Then, the blood vessel puncture sheath with a guide wire and the puncture mandrel 9 is punctured into the blood vessel. Under the guidance of the guide wire, the puncture mandrel 9 and the blood vessel puncture sheath smoothly enter the patient's blood vessel. Subsequently, the guide wire and the puncture mandrel 9 are taken out. At this time, for the blood vessel puncture sheath still puncturing in the blood vessel, a surgical channel that can accommodate surgical instruments is formed between the lumens of the puncture tube 1 and the guiding tube 2 and between the ball head 4 with a channel and the ball socket 5. After the operation is completed, the blood vessel puncture sheath is taken out.

[0052] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent replacements or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A vascular puncture sheath, characterized in that: It includes a longitudinally extending puncture tube (1), a guiding tube (2) swing-connected to the lower end of the puncture tube (1), and a puncture seat (3) connected to the upper end of the puncture tube (1) and used to guide the insertion of surgical instruments; A ball head (4) is provided at the bottom end of the puncture tube (1), and a ball socket (5) covering the periphery of the ball head (4) is provided at the top end of the guiding tube (2). Corresponding channels communicating with the puncture tube (1) are provided on the ball head (4) and the ball socket (5). The puncture tube (1) and the guiding tube (2) are swing-connected through the ball head (4) and the ball socket (5).

2. The vascular puncture sheath according to claim 1, wherein: It further includes two balloon assemblies (6) symmetrically arranged on the left and right sides of the outer wall of the guiding tube (2) and two balloon tracheas (7) longitudinally extending and respectively communicating with the corresponding balloon assemblies (6). An air valve (8) is provided at the upper end of the balloon trachea (7).

3. The vascular puncture sheath according to claim 2, characterized in that: The balloon assembly (6) includes a balloon A (61), a balloon B (62) obliquely arranged on the outer wall surface of the guiding tube (2), and a ventilation groove (63) communicating the balloon A (61) and the balloon B (62). The balloon A (61) communicates with the balloon trachea (7), and the ventilation groove (63) is opened in the tube wall of the guiding tube (2).

4. The vascular puncture sheath according to claim 2, characterized in that: The balloon trachea (7) extends along the lumen of the puncture tube (1) and passes through the upper tube wall of the puncture tube (1).

5. The vascular puncture sheath according to claim 3, characterized in that: The ventilation groove (63) is spirally extended along the tube wall of the guiding tube (2).

6. The vascular puncture sheath according to claim 1, wherein: A handle part (31) convenient for pinching is provided on the left outer wall of the puncture seat (3), and a liquid inlet tube (32) communicating with the puncture seat (3) is provided on the right outer wall of the puncture seat (3).

7. The vascular puncture sheath according to claim 1, characterized in that: The lower section of the guiding tube (2) has a necking part (21) with a gradually decreasing diameter.

8. A vascular puncture device, characterized in that: It includes the vascular puncture sheath according to any one of claims 1 to 7 and a puncture mandrel (9); The puncture mandrel (9) includes a longitudinally extending puncture rod (91) and a gripping handle (92) fixed to the upper end of the puncture rod (91). The puncture rod (91) penetrates into the upper end of the puncture seat (3) and passes through the lower end of the guiding tube (2). The lower end of the puncture rod (91) is of a conical structure, and a longitudinally extending channel for guiding a guide wire to penetrate is provided on the puncture mandrel (9).

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