Bidirectional puncture sheath for minimally invasive intervention

Abstract

The bidirectional puncture sheath for minimally invasive intervention comprises a sheath tube assembly and a sheath core, the sheath tube assembly comprises a tube body and a sheath tail, the sheath tail is fixed behind the tube body, a tube cavity is formed in the tube body, the front end of the tube body is bent, a balloon is arranged on the tube body and located on the upper side of the bent position of the tube body, a handheld part is arranged at the tail end of the sheath core, and the handheld part is connected with the sheath core. The catheter has the advantages that the catheter body can guide the guide wire in two directions, pain of a patient caused by secondary puncture in part of operations is avoided, operation efficiency is improved, and burden of a doctor in operation is reduced.

Description

Technical Field

[0001] This utility model relates to the field of puncture sheath technology, specifically to a bidirectional puncture sheath for minimally invasive intervention. Background Technology

[0002] Minimally invasive interventional puncture is an advanced medical technology that uses a sheath core instead of a scalpel to perform various diagnostic and treatment procedures under the guidance of medical imaging (such as ultrasound, CT, DSA, etc.). Minimally invasive interventional puncture can be performed through a tiny incision in the skin, avoiding the trauma and pain of traditional surgery.

[0003] During femoral or iliac artery surgery, puncture is usually performed in a fixed, single direction. When the guidewire needs to enter the opposite direction, the original sheath cannot meet the requirement, and a second puncture and repeated operation must be performed, which increases the doctor's trouble during the operation, increases the patient's pain, and is not conducive to the rapid progress of the operation. Utility Model Content

[0004] This invention addresses the problem that during femoral or iliac artery surgery, punctures are generally performed in a fixed, single direction. When the guidewire needs to enter the opposite direction, the original sheath cannot meet the requirement, necessitating repeated punctures, which increases the surgeon's workload, patient discomfort, and hinders the speed of the procedure. The invention provides a bidirectional puncture sheath for minimally invasive interventional procedures.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a bidirectional puncture sheath for minimally invasive intervention, including a sheath assembly and a sheath core. The sheath assembly includes a tube body and a sheath tail. The sheath tail is fixed to the rear of the tube body. The tube body has an inner cavity. The front end of the tube body is bent. A balloon is provided on the tube body and above the bend. The end of the sheath core has a handhold. The sheath core is inserted into the inner cavity from the sheath tail and is slidably connected to the inner cavity. The sheath core extends to the outer side of the front end of the tube body.

[0006] As an improvement, the needle at the front end of the sheath core has shape memory, the sheath core bends to one side in a free state, and the sheath core is constrained into a straight state in the inner cavity of the tube.

[0007] As an improvement, the sheath tail is connected to a conduit, and the end of the conduit is provided with a tee.

[0008] As an improvement, the outer shell of the balloon body is elliptical, the inlet and outlet tubes of the balloon are located inside the tube body, and the inlet and outlet tubes of the balloon extend to the rear side of the tube body.

[0009] The advantages of this invention are as follows: by setting a curved tube at the front end, after the puncture point is blocked by a balloon and the tube is fixed in place, the curved tube at the front end can rotate in the blood vessel, thereby changing the path of the guidewire. This allows a single sheath assembly to release the guidewire in different directions after puncture, avoiding the pain of secondary puncture for some patients during surgery, improving surgical efficiency, and reducing the burden on doctors during surgery. Attached Figure Description

[0010] Figure 1 This is an exploded structural diagram of the present invention.

[0011] Figure 2 This is a schematic diagram of the structure of this utility model.

[0012] Figure 3 This is a schematic diagram of the sheath core moving within the tube body according to this utility model.

[0013] Figure 4 This is a schematic diagram of the bidirectional puncture state of this utility model.

[0014] As shown in the figure: 1. Sheath assembly; 2. Sheath core; 3. Tube body; 4. Sheath tail; 5. Tube lumen; 6. Balloon; 7. Handle; 8. Catheter; 9. T-stop. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings.

[0016] Combined with appendix Figure 1-4 A bidirectional puncture sheath for minimally invasive intervention includes a sheath assembly 1 and a sheath core 2. The sheath assembly 1 includes a tube body 3 and a sheath tail 4. The sheath tail 4 is fixed to the rear of the tube body 3 and is connected to a catheter 8. The catheter 8 has a three-way valve 9 at its end. The tube body 3 has an inner lumen 5. The front end of the tube body 3 is bent. A balloon 6 is provided on the tube body 3 and above the bend. The outer shell of the balloon 6 is elliptical. The inlet and outlet tubes of the balloon 6 are located inside the tube body 3 and extend to the rear side of the tube body 3. The sheath core 2 has a handhold 7 at its end. The sheath core 2 is inserted into the inner lumen 5 from the sheath tail 4 and is slidably connected to the inner lumen 5. The sheath core 2 extends to the outer side of the front end of the tube body 3.

[0017] The needle body at the front end of the sheath core 2 has shape memory. The sheath core 2 bends to one side in a free state. The sheath core 2 is constrained to a straight state in the inner cavity 5 of the tube. The sheath core 2 with shape memory can move smoothly in the tube body 3. The sheath core 2 can smoothly adapt to the shape of the tube body 3 to change its bending and vertical state, so as to realize the puncture operation of the irregular sheath tube assembly 1.

[0018] By improving the structure of the puncture sheath, the puncture point is pre-sealed by the balloon 6 and the tube body 3 is fixed. The curved tube body 3 at the front end can rotate in the blood vessel, thereby changing the path of the guidewire. This allows the single sheath assembly 1 to release the guidewire in different directions after puncture, avoiding the pain of secondary puncture for some patients during surgery, improving surgical efficiency, and reducing the burden on doctors during surgery.

[0019] In a specific implementation of this invention, the sheath core is inserted into the tube body from the sheath tail through the hand-held part. The end of the sheath core becomes a straight needle body under the constraint of the tube body. When the sheath core enters the curved part of the tube body, it gradually returns to its original shape, inflating the balloon. After puncture, the sheath core is separated from the tube body, and the guidewire is inserted into the catheter from the tee. After the guidewire is inserted on one side, the guidewire can be replaced and the tube body can be rotated until the bend of the tube body faces the other side, and the guidewire can be inserted again.

[0020] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A bidirectional puncture sheath for minimally invasive interventional procedures, characterized in that: The device includes a sheath assembly (1) and a sheath core (2). The sheath assembly (1) includes a tube body (3) and a sheath tail (4). The sheath tail (4) is fixed behind the tube body (3). The tube body (3) has an inner cavity (5). The front end of the tube body (3) is bent. A balloon (6) is provided on the tube body (3) and above the bend. The sheath core (2) has a handhold (7) at its end. The sheath core (2) is inserted into the inner cavity (5) from the sheath tail (4) and is slidably connected to the inner cavity (5). The sheath core (2) extends to the outer side of the front end of the tube body (3).

2. The bidirectional puncture sheath for minimally invasive intervention as described in claim 1, characterized in that: The needle at the front end of the sheath core (2) has shape memory. The sheath core (2) bends to one side in a free state. The sheath core (2) is constrained into a straight state in the inner cavity (5) of the tube.

3. The bidirectional puncture sheath for minimally invasive intervention as described in claim 1, characterized in that: The sheath tail (4) is connected to a conduit (8), and the end of the conduit (8) is provided with a tee (9).

4. The bidirectional puncture sheath for minimally invasive intervention as described in claim 1, characterized in that: The outer shell of the balloon (6) is elliptical, and the inlet and outlet tubes of the balloon (6) are located inside the tube body (3). The inlet and outlet tubes of the balloon (6) extend to the rear side of the tube body (3).

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