Deep fixed-distance thread trimmer for minimally invasive surgery

Abstract

The invention discloses a minimally invasive surgery deep fixed-distance thread trimmer, and relates to the technical field of medical instruments, the minimally invasive surgery deep fixed-distance thread trimmer comprises a sleeve, a connecting hole is formed in the sleeve, an extension tube is fixedly connected to the front end of the sleeve, an operation hole is formed in the extension tube, the operation hole is communicated with the connecting hole, a catching mechanism is arranged at the front end of the extension tube, and the catching mechanism is fixedly connected with the sleeve. And a hooking mechanism is arranged right behind the catching mechanism. Through the arranged thread end length positioning and cutting mechanism, an annular light bar and a pinhole camera are turned on, the transmission sewing position and the cutting condition are clear in real time, an electric push rod is controlled to contract according to the sewing condition, at the moment, a connecting rod is driven to move backwards, and meanwhile the top end of the connecting rod pulls a cutter to move in an operation hole; and secondly, the scale ring moves along with the track of the cutter head through the connecting strip, so that the cutting length of the suture line can be positioned in advance according to the suture condition, and the operation condition can be clearly observed during operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a deep distance cutting device for minimally invasive surgery. BACKGROUND

[0002] Medical devices refer to instruments, equipment, appliances, in-vitro diagnostic reagents and calibrators, materials and other similar or related articles, including computer software required, which are used directly or indirectly for human beings. Medical devices include medical equipment and medical supplies. The utility is mainly obtained through physical means, not through pharmacology, immunology or metabolism, or although these means are involved, only play a supporting role.

[0003] In the existing minimally invasive surgery, the traditional cutting tool has the following problems: the doctor observes the operation field through the endoscope, the instrument operation space is small, the optical imaging has perspective distortion or depth of field error, which leads to the deviation of the judgment of the suture length, the length of the thread end is uncontrollable, and the operation is difficult. SUMMARY

[0004] Technical problems to be solved

[0005] The purpose of the present application is to overcome the shortcomings of the existing minimally invasive surgery, the traditional cutting tool, the doctor observes the operation field through the endoscope, the instrument operation space is small, the optical imaging has perspective distortion or depth of field error, which leads to the deviation of the judgment of the suture length, the length of the thread end is uncontrollable, and the operation is difficult.

[0006] Technical scheme

[0007] In order to achieve the above purpose, the present application provides the following technical scheme: a deep distance cutting device for minimally invasive surgery, comprising a sleeve, a connecting hole is formed in the inside of the sleeve, and a extension pipe is fixedly connected to the front end of the sleeve, an operation hole is formed in the inside of the extension pipe, and the operation hole is in communication with the connecting hole, a catching mechanism is arranged at the front end of the extension pipe, and a hooking mechanism is arranged behind the catching mechanism, the hooking mechanism is movably connected to the inside of the operation hole, a thread length positioning and cutting mechanism is fixedly connected to the inside of the connecting hole, and the front end of the thread length positioning and cutting mechanism extends to the inside of the operation hole, and a handle is fixedly connected to the bottom of the end of the sleeve away from the extension pipe.

[0008] Further, the thread length positioning and cutting mechanism comprises a cutting head, a connecting rod, an electric push rod and a scale ring, the connecting rod is fixedly connected to the middle position of the rear end of the cutting head, the other end of the connecting rod is fixedly connected to the output end of the electric push rod, and the inside of the scale ring is fixedly connected with a connecting strip, and the end of the connecting strip away from the scale ring is fixedly connected to one side of the cutting head.

[0009] Further, the cutting head is semicircular, and a cutter head is arranged on the front side of the cutting head, the cutting head is located inside the operation hole, and one end of the connecting rod is located inside the operation hole, and the other end of the connecting rod and the electric push rod are fixedly connected to the inside of the connecting hole.

[0010] Further, the two sides of the extension pipe are provided with connecting grooves, and the outside of the extension pipe is provided with a scale, the scale ring is slidingly connected to the outside of the extension pipe, the connecting strip is slidingly connected to the inside of the connecting groove, the sleeve is fixedly connected with a ring-shaped light bar at the extension pipe connection position, one end of the sleeve is fixedly connected with a pinhole camera, and the pinhole camera is located inside the ring-shaped light bar.

[0011] Further, the hooking mechanism comprises a connecting head, a hooking strip, a driving rod, a driving ring and an electric telescopic rod, the driving ring is fixedly connected to the telescopic end of the electric telescopic rod, the driving rod is provided with two and is fixedly connected to one end away from the electric telescopic rod in a symmetrical manner, the connecting head is fixedly connected to the other end of the driving rod respectively, and the hooking strip is movably connected to the outside of the connecting head in a symmetrical manner through a torque spring and a rotating shaft.

[0012] Further, the connecting head is semicircular, the connecting head is slidingly connected to the inside of the operation hole, the electric telescopic rod is fixedly connected to the inside of the connecting hole, and the distance between the cutting head and the two connecting heads is matched, and the connecting rod penetrates the middle position of the driving ring.

[0013] Further, the capturing mechanism comprises a capturing strip, a control strip, an operating rod, an operating block and a return spring, the return spring is fixedly connected to one side of the top end of the control rod, one end of the operating rod is fixedly connected to the other end of the operating block, the other end of the operating rod penetrates the sleeve and the extension pipe in sequence, the control strip is movably connected to the other end of the control rod through a rotating shaft, and the capturing strip is movably connected to the other end of the control strip through a rotating shaft.

[0014] Further, the capturing strip is arc-shaped and the arc is greater than one hundred and twenty degrees, the extension pipe is provided with a mounting groove, and one end of the capturing strip is movably connected to the inside of the mounting groove through a rotating shaft and a torque spring.

[0015] Further, the outside of the sleeve is provided with a rectangular hole, and the rectangular hole is in communication with the connecting hole, the bottom end of the operating block penetrates the operation hole and extends to the outside of the sleeve, and the bottom end of the operating block is arc-shaped.

[0016] Compared with the prior art, the minimally invasive deep distance cutting and cutting device has the following beneficial effects:

[0017] I, the length of the thread positioning cutting mechanism is set, the annular light bar and the pinhole camera are opened, the suture position and the cutting condition are clearly transmitted in real time, the electric push rod is controlled to retract according to the suture condition, at this time, the connecting rod is driven to move backward, and the top end of the connecting rod pulls the cutting knife to move in the operation hole, and then the scale ring moves along the trajectory of the cutting knife head, so that the suture line length can be positioned in advance according to the suture condition, and the operation condition can be clearly observed during operation.

[0018] II, the hooking mechanism is set, the driving ring is controlled to drive the connecting head to push out of the inside of the operation hole through the driving rod, and the torque spring reacts on the hooking strip to make it open outward, the suture line is located on the opposite side of the hooking strip by rotating the sleeve, then the electric telescopic rod is controlled to retract, and the connecting head is pulled back into the inside of the operation hole, in this process, the edges of the operation hole push the hooking strips inward and close to each other, and the suture line is folded and pulled into the inside of the operation hole, until the cutting head cuts off the suture line by passing through the middle position of the connecting head, so that the cutting length can be cut according to the cutting length prepared in advance, and the operation difficulty is reduced.

[0019] II, the capturing mechanism is set, the operation block is pulled back by the fingers, the operation rod is pulled back, at this time, the reset spring is squeezed and retracted, the other end of the operation rod pulls the control strip to move backward, then the capturing strip swings and opens, and the extension pipe is pushed forward to make the suture line located in the inside of the capturing strip, the fingers are released, at this time, the reset spring reacts on the operation block to push the operation rod to make the capturing strip reset and wrap the suture line, so that the suture line can be positioned, the falling off during cutting is avoided, and the operation failure is avoided.

[0020] Other advantages, objects, and features of the present application will be apparent to those skilled in the art from the following specification, in some degree of certainty, and in some degree of certainty, based on the study of the following, or can be taught from the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application;

[0022] Figure 2 It is a schematic diagram of the sleeve local section connection structure of the present application;

[0023] Figure 3 It is a schematic diagram of the extension pipe connection structure of the present application;

[0024] Figure 4 It is a schematic diagram of the extension pipe local section structure of the present application;

[0025] Figure 5This is a schematic diagram of the mounting slot connection structure of the present invention;

[0026] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle.

[0027] In the diagram: 1. Sleeve; 2. Connecting hole; 3. Extension tube; 4. Operating hole; 5. Capturing mechanism; 501. Capturing bar; 502. Control bar; 503. Operating rod; 504. Operating block; 505. Return spring; 6. Hooking mechanism; 601. Connector; 602. Hooking bar; 603. Drive rod; 604. Drive ring; 605. Electric telescopic rod; 7. Thread length positioning and cutting mechanism; 701. Cutting head; 702. Connecting rod; 703. Electric push rod; 704. Scale ring; 705. Connecting bar; 8. Handle; 9. Connecting groove; 10. Scale; 11. Circular light strip; 12. Pinhole camera; 13. Mounting groove; 14. Rectangular hole. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] like Figures 1-6 As shown, the present invention provides a technical solution: a minimally invasive surgical deep suture cutter, including a sleeve 1, a connecting hole 2 inside the sleeve 1, and an extension tube 3 fixedly connected to the front end of the sleeve 1. An operation hole 4 is opened inside the extension tube 3 and is connected to the connecting hole 2. A capture mechanism 5 is provided at the front end of the extension tube 3, and a hooking mechanism 6 is provided directly behind the capture mechanism 5. The hooking mechanism 6 is movably connected to the inside of the operation hole 4. A suture length positioning and cutting mechanism 7 is fixedly connected inside the connecting hole 2, and the front end of the suture length positioning and cutting mechanism 7 extends into the inside of the operation hole 4. A handle 8 is fixedly connected to the bottom of the end of the sleeve 1 away from the extension tube 3.

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and 5As shown, the thread length positioning and cutting mechanism 7 includes a cutting head 701, a connecting rod 702, an electric push rod 703, and a scale ring 704. The connecting rod 702 is fixedly connected to the middle of the rear end of the cutting head 701, and the other end of the connecting rod 702 is fixedly connected to the output end of the electric push rod 703. The inside of the scale ring 704 is fixedly connected with a connecting strip 705, and the end of the connecting strip 705 away from the scale ring 704 is fixedly connected to one side of the cutting head 701. The cutting head 701 is semicircular, and a blade head is provided on the front side of the cutting head 701. The cutting head 701 is located inside the operation hole 4, and one end of the connecting rod 702 is located inside the operation hole 4. The other end of the connecting rod 702 and the electric push rod 703 are fixedly connected inside the connecting hole 2. The two sides of the extension pipe 3 are provided with connecting grooves 9, and the outside of the extension pipe 3 is provided with a scale 10. The scale ring 704 is slidingly connected to the outside of the extension pipe 3, and the connecting strip 705 is slidingly connected to the inside of the connecting groove 9. The sleeve 1 is fixedly connected with a ring-shaped light bar 11 at the connecting position of the extension pipe 3. One end of the sleeve 1 is fixedly connected with a pinhole camera 12, and the pinhole camera 12 is located inside the ring-shaped light bar 11.

[0031] By turning on the ring-shaped light bar 11 and the pinhole camera 12, the suture position and the cutting situation can be clearly transmitted in real time. The electric push rod 703 is controlled to retract according to the suture situation. At this time, the connecting rod 702 is driven to move backward, and the top end of the connecting rod 702 pulls the cutting blade to move inside the operation hole 4. The scale ring 704 moves along the trajectory of the cutting blade head through the connecting strip 705, so as to facilitate positioning the length of the suture thread in advance according to the suture situation, and the operation situation can be clearly observed during the operation.

[0032] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and 6 , the hooking mechanism 6 includes a connecting head 601, a hooking strip 602, a driving rod 603, a driving ring 604, and an electric telescopic rod 605. The driving ring 604 is fixedly connected to the telescopic end of the electric telescopic rod 605. The driving rod 603 is provided with two and is symmetrically fixedly connected to one end of the driving rod 603 away from the electric telescopic rod 605. The connecting head 601 is fixedly connected to the other end of the driving rod 603. The hooking strip 602 is symmetrically movably connected to the outside of the connecting head 601 through a torque spring and a rotating shaft. The connecting head 601 is semicircular and slidingly connected to the inside of the operation hole 4. The electric telescopic rod 605 is fixedly connected to the inside of the connecting hole 2, and the distance between the cutting head 701 and the two connecting heads 601 is adapted. The connecting rod 702 penetrates the middle position of the driving ring 604.

[0033] By controlling the electric telescopic rod 605 to push the connecting head 601 out of the inside of the operation hole 4 through the driving rod 603, while the torque spring reacts on the hooking strip 602 to make it open outward, by rotating the sleeve 1 to make its suture thread be located on the opposite side of the hooking strip 602, then controlling the electric telescopic rod 605 to retract, the connecting head 601 is pulled back into the inside of the operation hole 4, in this process, the edges of the operation hole 4 push the hooking strips 602 close to each other, and at the same time, the suture thread is folded and pulled into the inside of the operation hole 4, until the cutting head cuts the suture thread through the middle position of the connecting head 601, which is beneficial to cutting according to the cutting length prepared in advance, and reduces the operation difficulty.

[0034] As shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and 6 , the capturing mechanism 5 includes a capturing strip 501, a control strip 502, an operating rod 503, an operating block 504 and a reset spring 505, the reset spring 505 is fixedly connected to one side of the top end of the control rod, and one end of the operating rod 503 is fixedly connected to the other end of the operating block 504, the other end of the operating rod 503 penetrates the sleeve 1 and the extension pipe 3 in turn, the control strip 502 is movably connected to the other end of the control rod through a rotating shaft, and the capturing strip 501 is movably connected to the other end of the control strip 502 through a rotating shaft, the capturing strip 501 is arc-shaped and the arc is greater than one hundred and twenty degrees, the extension pipe 3 is provided with a mounting groove 13, and one end of the capturing strip 501 is movably connected to the inside of the mounting groove 13 through a rotating shaft and a torque spring, the outside of the sleeve 1 is provided with a rectangular hole 14, and the rectangular hole 14 is in communication with the connecting hole 2, the bottom end of the operating block 504 penetrates the operation hole 4 and extends to the outside of the sleeve 1, and the bottom end of the operating block 504 is arc-shaped.

[0035] By pulling the operating block 504 backward with fingers, the operating block 504 moves backward and pulls the operating rod 503 at the same time, at this time, the reset spring 505 is squeezed and retracted, the other end of the operating rod 503 pulls the control strip 502 to move backward, then the capturing strip 501 swings and opens in turn, and then the extension pipe 3 is pushed forward to make the suture thread be located in the inside of the capturing strip 501, and the fingers are released, at this time, the reset spring 505 reacts on the operating block 504 to push the operating rod 503 to make the capturing strip 501 reset and wrap the suture thread, so as to be beneficial to limiting the suture thread and avoiding falling off during cutting, and the operation fails.

[0036] Working principle: in use, hold the handle 8, then push the extension tube 3 to the minimally invasive surgery suture site, secondly turn on the ring-shaped light bar 11 and the pinhole camera 12, real-time clear transmission of the suture position and cutting situation, control the electric push rod 703 to retract according to the suture situation, at this time the connecting rod 702 is driven to move backward, at the same time its top end pulls the cutting knife to move inside the operation hole 4, secondly the scale ring 704 moves along the trajectory of the cutting knife head through the connecting strip 705, then use fingers to pull the operation block 504 backward, which moves backward while pulling the operating rod 503, at this time the return spring 505 is compressed and retracted, the other end of the operating rod 503 pulls the control strip 502 to move backward, then the catch strip 501 swings and opens, secondly push the extension tube 3 forward so that the suture line is inside the catch strip 501, release the fingers, at this time the return spring 505 pushes the operation block 504 to pull the operating rod 503 so that the catch strip 501 is reset to wrap the suture line, then control the electric telescopic rod 605 through the driving ring 604, so that it pushes the connecting head 601 out of the inside of the operation hole 4 through the driving rod 603, at the same time the torque spring reacts on the hooking strip 602 to make it open outward, rotate the sleeve 1 so that the suture line is on the opposite side of the hooking strip 602, then control the electric telescopic rod 605 to retract, pull the connecting head 601 back into the inside of the operation hole 4, in this process, the edges of the operation hole 4 push the hooking strip 602 inward to move closer to each other, at the same time the suture line is folded and pulled into the inside of the operation hole 4, until the cutting head cuts off the suture line at the middle position of the connecting head 601.

[0037] It should be noted that in this paper, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application; the terms "first", "second", "third" are only for description purposes, and cannot be understood as indicating or implying relative importance, in addition, unless otherwise explicitly specified and limited, the terms "fixed", "mounted", "connected", "linked" should be understood broadly, for example, "mounted" can be fixed connection, or detachable connection, or integral connection; "connected" can be mechanical connection, or electrical connection; "connection" can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A minimally invasive surgical deep depth guillotine, comprising a cannula (1), characterised in that: The inside of the sleeve (1) is provided with a connecting hole (2), and the front end of the sleeve (1) is fixedly connected with an extension pipe (3), the inside of the extension pipe (3) is provided with an operating hole (4), and the operating hole (4) is communicated with the connecting hole (2), the front end of the extension pipe (3) is provided with a capturing mechanism (5), and the rear of the capturing mechanism (5) is provided with a hooking mechanism (6), the hooking mechanism (6) is movably connected in the inside of the operating hole (4), the inside of the connecting hole (2) is fixedly connected with a thread length positioning and cutting mechanism (7), and the front end of the thread length positioning and cutting mechanism (7) extends to the inside of the operating hole (4), and the bottom of the end of the sleeve (1) away from the extension pipe (3) is fixedly connected with a handle (8).

2. The minimally invasive deep depth gaugeing scissor dissector of claim 1, wherein: The thread length positioning and cutting mechanism (7) comprises a cutting head (701), a connecting rod (702), an electric push rod (703) and a scale ring (704), the connecting rod (702) is fixedly connected to the middle position of the rear end of the cutting head (701), one end of the connecting rod (702) is fixedly connected to the output end of the electric push rod (703), and the inside of the scale ring (704) is fixedly connected with a connecting strip (705), and one end of the connecting strip (705) away from the scale ring (704) is fixedly connected to one side of the cutting head (701).

3. The minimally invasive deep depth gaugeing scissor dissector of claim 2, wherein: The cutting head (701) is semicircular, and a cutter head is formed in the front side of the cutting head (701), the cutting head (701) is located in the inside of the operating hole (4), and one end of the connecting rod (702) is located in the inside of the operating hole (4), the other end of the connecting rod (702) and the electric push rod (703) are fixedly connected to the inside of the connecting hole (2).

4. The minimally invasive deep depth gaugeing scissor dissector of claim 1, wherein: The two sides of the extension pipe (3) are provided with connecting grooves (9), and the outside of the extension pipe (3) is provided with a scale (10), the scale ring (704) is slidably connected to the outside of the extension pipe (3), the connecting strip (705) is slidably connected to the inside of the connecting groove (9), the sleeve (1) is fixedly connected with a ring-shaped light bar (11) at the connecting position of the extension pipe (3), one end of the sleeve (1) is fixedly connected with a pinhole camera (12), and the pinhole camera (12) is located in the inside of the ring-shaped light bar (11).

5. The minimally invasive deep depth gaugeing scissor dissector of claim 1, wherein: The hooking mechanism (6) comprises a connecting head (601), a hooking strip (602), a driving rod (603), a driving ring (604) and an electric telescopic rod (605), the driving ring (604) is fixedly connected to the telescopic end of the electric telescopic rod (605), the driving rod (603) is provided with two and is fixedly connected to one end of the driving rod (603) away from the electric telescopic rod (605) in a symmetrical manner, the connecting head (601) is fixedly connected to the other end of the driving rod (603), respectively, the hooking strip (602) is movably connected to the outside of the connecting head (601) by a torque spring and a rotating shaft in a symmetrical manner.

6. The minimally invasive deep depth gaugeing scissor dissector of claim 5, wherein: The connecting head (601) is semicircular, the connecting head (601) is slidingly connected to the inside of the operation hole (4), the electric telescopic rod (605) is fixedly connected to the inside of the connecting hole (2), the spacing between the cutting head (701) and the two connecting heads (601) is adapted, and the connecting rod (702) penetrates the middle position of the driving ring (604).

7. The minimally invasive deep depth gaugeing scissor dissector of claim 1, wherein: The capturing mechanism (5) comprises a capturing strip (501), a control strip (502), an operating rod (503), an operating block (504) and a reset spring (505), the reset spring (505) is fixedly connected to one side of the top end of the control rod, one end of the operating rod (503) is fixedly connected to the other end of the operating block (504), the other end of the operating rod (503) penetrates the sleeve (1) and the extension pipe (3) in sequence, the control strip (502) is movably connected to the other end of the control rod through a rotating shaft, and the capturing strip (501) is movably connected to the other end of the control strip (502) through a rotating shaft.

8. The minimally invasive deep depth gaugeing scissor dissector of claim 7, wherein: The capturing strip (501) is arc-shaped and has an arc greater than one hundred and twenty degrees, the extension pipe (3) is provided with a mounting groove (13), and one end of the capturing strip (501) is movably connected to the inside of the mounting groove (13) through a rotating shaft and a torque spring.

9. The minimally invasive deep depth gaugeing scissor dissector of claim 1, wherein: The outside of the sleeve (1) is provided with a rectangular hole (14) in communication with the connecting hole (2), and the bottom end of the operating block (504) extends to the outside of the sleeve (1) through the operation hole (4), and the bottom end of the operating block (504) is arc-shaped.

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