Natural orifice transluminal suture needle delivery device

Abstract

The utility model discloses a kind of suture needle conveying devices through natural cavity, comprising: spring outer tube, can pass through the instrument channel of endoscope, for holding and conveying suture needle;Spring inner tube, it is set in the spring outer tube inside, for fixed and push-pull suture needle, can drive suture needle to move and contract in the spring outer tube inside, also can drive suture needle to move and extend spring outer tube end portion;Suture needle, tail is fixed in the spring inner tube inside, can move under the driving of spring inner tube;Suture line, with the suture needle is connected, it is set in the spring inner tube inside.The suture needle of the utility model can become straight state under external force, it is sent into specified operation area along the instrument channel of various endoscopes, then it is pushed out spring outer tube, suture needle restores curved form, carries out suture operation, avoid the damage to natural cavity.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a suture needle delivery device via natural cavities. Background Technology

[0002] Currently, when performing gastrointestinal surgery, especially endoscopic submucosal dissection (ESD), large or deep lesions may expose the muscle layer or even approach the serosal layer, which can easily cause tissue perforation, such as gastric perforation or intestinal perforation. In such cases, hemostatic clips, nylon ropes or special suturing instruments are needed to close the wound and reduce the risk of bleeding and perforation.

[0003] In various surgeries involving natural orifices, wound suturing has always been a challenge, mainly because the width of the suture needle is generally around 10mm, and transporting it along the natural orifice to the designated surgical position poses a high risk of damage to the walls of the natural orifice. Utility Model Content

[0004] To address the problem of difficulty in delivering suture needles to the surgical site, this invention provides a suture needle delivery device via natural cavities.

[0005] A suture needle delivery device via a natural cavity, comprising: The spring-loaded outer tube passes through the instrument channel of the endoscope and is used to hold and deliver suture needles; The inner spring tube is fitted inside the outer spring tube and is used to fix and push the suture needle. It can move the suture needle and retract it inside the outer spring tube, or it can move the suture needle and extend it out of the end of the outer spring tube. The suture needle has its tail fixed inside the inner spring tube and can move under the action of the inner spring tube; The suture thread, connected to the suture needle, is disposed inside the inner tube of the spring.

[0006] Preferably, both the outer spring tube and the inner spring tube are made of rigid spring tubes.

[0007] Preferably, the suture needle is made of nickel-titanium alloy, and its natural state is preset to a curved shape suitable for suturing, and it can be stretched into a straight state under external force.

[0008] Preferably, the tail of the suture needle and the suture are integrally connected.

[0009] Preferably, the suture is a fishbone-shaped barbed suture.

[0010] Compared with the prior art, the present invention has the following advantages: 1. The suture needle can be straightened under external force and inserted into the designated surgical area through the instrument channel of various endoscopes. Then, it is pushed out of the spring tube and the suture needle returns to its curved shape to perform the suturing operation, thus avoiding damage to natural cavities. 2. The rigid design of the outer and inner spring tubes allows them to bend and adapt to the insertion of the endoscope into the body's natural cavities, while also possessing a certain rigidity so that they will not be bent by the bending tension of the suture needle. Attached Figure Description

[0011] Figure 1 This is a front view structural diagram of the suture needle in the straightened state of this utility model.

[0012] Figure 2 for Figure 1 A cross-sectional structural diagram.

[0013] Figure 3 This is a front view structural diagram of the suture needle in a bent state according to this utility model.

[0014] Figure 4 for Figure 3 A cross-sectional structural diagram.

[0015] Explanation of reference numerals in the attached diagram: 1. Outer tube of spring; 2. Inner tube of spring; 3. Suture thread; 4. Suture needle. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figures 1-4 As shown, this embodiment of a suture needle delivery device via a natural cavity includes a spring outer tube 1, a spring inner tube 2, a suture needle 4, and a suture thread 3. The spring outer tube 1 can pass through the instrument channel of an endoscope under the control of a physician and is used to hold and deliver the suture needle 4. The spring inner tube 2 is sleeved inside the spring outer tube 1 and can move axially inside the spring outer tube 1. It is used to fix and push and pull the suture needle 4. The spring inner tube 2 can drive the suture needle 4 to move and retract inside the spring outer tube 1, and can also drive the suture needle 4 to move and extend out of the end of the spring outer tube 1. The tail of the suture needle 4 is fixed inside the spring inner tube 2 and can move under the drive of the spring inner tube 2. The suture thread 3 is connected to the suture needle 4 and is disposed inside the spring inner tube 2.

[0018] In this embodiment, both the outer spring tube 1 and the inner spring tube 2 are rigid spring tubes.

[0019] In this embodiment, the suture needle 4 is made of nickel-titanium alloy, and its natural state is preset to a curved shape suitable for suturing, and it can be pulled into a straight state under external force.

[0020] In this embodiment, the tail of the suture needle 4 and the suture thread 3 are integrated and connected as one piece.

[0021] In this embodiment, the suture 3 is a fishbone-shaped barbed suture.

[0022] In this embodiment, during installation, the inner spring tube 2 is first passed through the suture 3 so that the end of the inner spring tube 2 is fitted onto the crimping point between the suture needle 4 and the suture 3, fixing the tail of the suture needle 4 to the end of the inner spring tube 2. Then, the inner spring tube 2 is inserted into the outer spring tube 1, and the inner spring tube 2 is pulled and moved, causing the suture needle 4 to move into the outer spring tube 1. Under external force, the bent part of the suture needle 4 is pulled from its natural bent state to a straight state and enters the outer spring tube 1, with the needle tip positioned so that it is just below the end of the outer spring tube 1. During use, the entire delivery device is first transported to the surgical position along the instrument channel of the endoscope. Then, by pushing the inner spring tube 2, the suture needle 4 is pushed out of the outer spring tube 1 and into the surgical area. At this time, since no external force is applied to the suture needle 4, the suture needle 4 returns to its natural curved state. Under the control of the suturing instrument, it is released from the fixation of the inner spring tube 2, and the surgical wound is sutured. After use, the biopsy forceps are inserted into the surgical area along the outer spring tube 1, and the needle tip of the suture needle 4 is clamped and inserted into the outer spring tube 1. At this time, the entire delivery device is withdrawn from the natural cavity, which can avoid damage to the mucosa by the suture needle 4 and reduce the risk of damage to the natural cavity while completing the surgical suturing.

[0023] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A suture needle delivery device via a natural cavity, characterized in that: include: The spring-loaded outer tube passes through the instrument channel of the endoscope and is used to hold and deliver suture needles; The inner spring tube is fitted inside the outer spring tube and is used to fix and push the suture needle. It can move the suture needle and retract it inside the outer spring tube, or it can move the suture needle and extend it out of the end of the outer spring tube. The suture needle has its tail fixed inside the inner spring tube and can move under the action of the inner spring tube; The suture thread, connected to the suture needle, is disposed inside the inner tube of the spring.

2. The suture needle delivery device via natural cavity according to claim 1, characterized in that: Both the outer spring tube and the inner spring tube are made of rigid spring tubes.

3. The suture needle delivery device via natural cavity according to claim 1, characterized in that: The suture needle is made of nickel-titanium alloy and is pre-designed to be curved for suturing, and can be stretched into a straight line under external force.

4. A suture needle delivery device via a natural cavity according to claim 1 or 3, characterized in that: The tail of the suture needle is integrally connected with the suture thread.

5. A suture needle delivery device via a natural cavity according to claim 1, characterized in that: The sutures used are herringbone-shaped barbed sutures.

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