Double knot pusher for transsphenoidal endoscopic surgery

Abstract

The invention discloses a double knot pusher for transsphenoidal endoscopic surgery, comprising a sleeve and an operating handle, wherein the operating handle comprises a first finger ring and a second finger ring, wherein the first finger ring and the second finger ring are hingedly connected, wherein the rear end of the sleeve is fixed to the handle extension of the first finger ring, wherein the sleeve is characterized in that a connecting rod is arranged in the sleeve, wherein the rear end of the connecting rod is fixed to the handle extension of the second finger ring, wherein a first knot pusher ring is arranged at the working end of the connecting rod, wherein a second knot pusher ring is arranged away from the first knot pusher ring and toward the operating handle, wherein the first knot pusher ring and the second knot pusher ring are arranged side by side along the axial direction of the sleeve. The device is provided with two knot pushers, and can tie two knots at a time, and at the same time, the planar structure of the working surface of the knot pusher ring ensures that, in the process of pushing the knot head, the suture line will not slip out, and the knot head can be pushed into place more accurately and the knot head can be tied tightly, thereby reducing the difficulty of knotting at the skull base.

Description

Technical Field

[0001] The invention belongs to the field of medical instruments, and in particular relates to a double-knot pusher for transsphenoidal endoscopic surgery. Background Art

[0002] Endoscopic transsphenoidal surgery often requires skull base reconstruction. The operating space for nasal surgery is relatively narrow. At this time, a knot pusher is needed to push the knot from outside the nasal cavity to the deep part to complete the knotting. Existing knot pushers are mainly used for laparoscopy and arthroscopy, and cannot be used in neuroendoscopic surgery. Transsphenoidal endoscopic surgery cannot use existing instruments to complete related operations, resulting in difficulty in knotting after suturing the dura mater during skull base reconstruction. Therefore, it is very necessary to develop a knot pusher that can be used in neuroendoscopic surgery. Summary of the invention

[0003] The purpose of the present invention is to provide a double-knot pusher for transsphenoidal endoscopic surgery.

[0004] The objective of the present invention is achieved in this way. A double-knot pusher for transsphenoidal endoscopic surgery comprises a sleeve and an operating handle, wherein the operating handle comprises a first finger ring and a second finger ring, the first finger ring and the second finger ring are hingedly connected, the rear end of the sleeve is fixed to the handle extension of the first finger ring, and the sleeve is characterized in that a connecting rod is arranged in the sleeve, the rear end of the connecting rod is fixed to the handle extension of the second finger ring, a first push-knot ring is arranged at the working end of the connecting rod, a second push-knot ring is arranged away from the first push-knot ring and toward the operating handle, and the first push-knot ring and the second push-knot ring are arranged side by side along the axial direction of the sleeve.

[0005] Beneficial effects of the present invention:

[0006] The present invention is suitable for tying knots after suturing in skull base reconstruction surgery during transsphenoidal endoscopic surgery. The device is provided with two knot-pushing rings, which can tie two knots at a time. At the same time, the planar structure of the working surface of the knot-pushing ring ensures that the suture will not slip out during the process of pushing the knot head. Secondly, the knot head can be pushed into place more accurately and tightened, thereby reducing the difficulty of skull base knotting, improving the success rate of skull base reconstruction, and reducing the risk of postoperative cerebrospinal fluid leakage. The use of the device has little effect on the postoperative wound and almost no secondary trauma. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0008] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0009] Figure 3 It is a schematic top view of the overall structure of the present invention;

[0010] Figure 4 It is a cross-sectional schematic diagram of the overall structure of the present invention along the line BB;

[0011] Figure 5 It is a schematic diagram of another embodiment of the present invention;

[0012] Figure 6 for Figure 5 A schematic diagram of the main view;

[0013] Figure 7 for Figure 6 BB-direction cross-sectional schematic diagram;

[0014] Figure 8 A schematic diagram of a third embodiment of the present invention;

[0015] In the figure: 1-sleeve, 2-second finger ring, 3-first finger ring, 4-first push-knot ring, 5-inclined surface, 6-second push-knot ring, 7-connecting rod. DETAILED DESCRIPTION

[0016] The present invention is further described below in conjunction with the accompanying drawings, but the present invention is not limited in any way. Any changes or improvements made based on the teachings of the present invention belong to the protection scope of the present invention.

[0017] As shown in the figure, the double-knot pusher for transsphenoidal endoscopic surgery described in the present invention includes a sleeve 1 and an operating handle, the operating handle includes a first finger ring 3 and a second finger ring 2, the first finger ring 3 and the second finger ring 2 are hinged, the rear end of the sleeve 1 is fixed to the handle extension of the first finger ring 3, a connecting rod 7 is arranged in the sleeve 1, the rear end of the connecting rod 7 is fixed to the handle extension of the second finger ring 2, a first push-knot ring 4 is arranged at the working end of the connecting rod 7, and a second push-knot ring 6 is arranged away from the first push-knot ring 4 and toward the operating handle, and the first push-knot ring 4 and the second push-knot ring 6 are arranged side by side along the axial direction of the sleeve 1.

[0018] The front section of the connecting rod 7 is divided into a left connecting rod and a right connecting rod. The first push-knot ring 4 is a non-closed structure, including left and right semicircular rings. The left semicircular ring is fixed to the left connecting rod, and the right semicircular ring is fixed to the right connecting rod.

[0019] The second push-knot ring 6 is arranged on the connecting rod 7. The second push-knot ring 6 is a non-closed structure, including left and right semicircular rings. The left semicircular ring is fixed to the left connecting rod, and the right semicircular ring is fixed to the right connecting rod.

[0020] The second push-knot ring 6 is arranged on the connecting rod 7. The second push-knot ring 6 is a non-closed structure, including left and right semicircular rings. The left semicircular ring is fixed to the left connecting rod, and the right semicircular ring is fixed to the right connecting rod.

[0021] The second push-tie ring 6 is a closed circular ring, circumscribed on the surface of the sleeve 1 .

[0022] The second push-tie ring 6 is a closed circular ring inscribed in the surface of the sleeve 1 .

[0023] When the connecting rod 7 is not in operation, a slope 5 is arranged on the part of the front end extending outward from the sleeve 1 so that the heights of the first push-and-tie ring 4, the second push-and-tie ring 6 and the sleeve 1 are kept consistent.

[0024] The handle extension portion of the first finger ring 3 and the handle extension portion of the second finger ring 2 are arranged at an angle.

[0025] The working surfaces of the second push-and-tie ring 6 and the first push-and-tie ring 4 are provided with rounded corners.

[0026] The outer diameter of the first push-knot ring 4 is 1.5-2 mm.

[0027] The outer diameter of the second push-to-lock ring 6 plus the outer diameter of the sleeve 1 is the same as the outer diameter of the first push-to-lock ring 4 .

[0028] Example 1

[0029] like Figure 1 As shown, it includes a sleeve 1 and an operating handle, the operating handle includes a first finger ring 3 and a second finger ring 2, the first finger ring 3 and the second finger ring 2 are hinged, the rear end of the sleeve 1 is fixed to the handle extension of the first finger ring 3, a connecting rod 7 is arranged in the sleeve 1, the rear end of the connecting rod 7 is fixed to the handle extension of the second finger ring 2, a first push ring 4 is arranged at the working end of the connecting rod 7, a second push ring 6 is arranged side by side with the first push ring 4 on the connecting rod 7, the second push ring 6 is the same as the first push ring 4, the structure is a non-closed circular ring structure, and is respectively arranged on the left and right connecting rods of the connecting rod 7, the first push ring 4 and the second push ring 6 are arranged side by side along the axial direction of the sleeve 1, in order to minimize the outer dimension as much as possible, an inclined surface is arranged at the front end of the connecting rod 7, and the first push ring 4 and the second push ring 6 are arranged on the inclined surface, so that the height of the first push ring 4 and the second push ring 6 can be consistent with the sleeve 1. The outer dimension of the entire working section is ensured to be small enough as much as possible, which is convenient for operation in a narrow space.

[0030] Example 2

[0031] like Figure 5 As shown, a first push-tie ring 4 is provided at the working end of the connecting rod 7, and a second push-tie ring 6 is provided on the sleeve 1, which is a closed circular ring structure and is circumscribed to the sleeve 1. The remaining structures are the same as those in Example 1.

[0032] Example 3

[0033] like Figure 8 As shown, the second push-tie ring 6 is inscribed on the sleeve 1, and the remaining structure is the same as that of embodiment 2.

[0034] Working principle and working process of the present invention:

[0035] When the present invention is used, two knots are tied continuously, and the tied unilateral suture is passed through the second push-knot ring, and then the second finger ring 2 is opened, and the connecting rod 7 is pushed out of the sleeve 1, and the front end of the connecting rod 7 is naturally separated, that is, the first push-knot ring is naturally opened, and then the tied suture is clamped, and then the second finger ring 2 is folded to close the first push-knot ring 4, and then the suture is pulled with one hand, and the pusher is operated with the other hand, and the pusher is slowly pushed inward, and the pusher is gently withdrawn from the pusher after it is in place, and retreated to a suitable position, and the connecting rod is pushed out of the sleeve again, and the first push-knot ring is opened, and the suture at the rear end of the second knot is clamped, and then the first push-knot ring is closed, and the second knot is pushed in. The knot is pushed in by the working surface of the first push-knot ring, and there will be no slippage or deviation of the suture, and it is in place in one step. Pushing two knots in at one time to complete the knotting, the knotting is firm, not loose, and the accuracy of the knotting is improved.

Claims

1. A double knot pusher for transsphenoidal endoscopic surgery, comprising a sleeve (1) and an operating handle, wherein the operating handle comprises a first finger ring (3) and a second finger ring (2), wherein the first finger ring (3) and the second finger ring (2) are hingedly connected, and the rear end of the sleeve (1) is fixed to an extension of the handle of the first finger ring (3). Features A connecting rod (7) is arranged in the sleeve (1), and the rear end of the connecting rod (7) is fixed to the handle extension portion of the second finger ring (2). A first push-knot ring (4) is arranged at the working end of the connecting rod (7), and a second push-knot ring (6) is arranged away from the first push-knot ring (4) and toward the operating handle. The first push-knot ring (4) and the second push-knot ring (6) are arranged side by side along the axial direction of the sleeve (1). The front section of the connecting rod (7) is divided into a left connecting rod and a right connecting rod. The first push-knot ring (4) is a non-closed structure, including left and right semicircular rings, the left semicircular ring is fixed to the left connecting rod, and the right semicircular ring is fixed to the right connecting rod. The second push-knot ring (6) is arranged on the connecting rod (7), and the second push-knot ring (6) is a non-closed structure, including left and right semicircular rings, the left semicircular ring is fixed to the left connecting rod, and the right semicircular ring is fixed to the right connecting rod.

2. The double knot pusher for transsphenoidal endoscopic surgery according to claim 1, Features The second push-knot ring (6) is a closed circular ring, circumscribed on the surface of the sleeve (1).

3. The double knot pusher for transsphenoidal endoscopic surgery according to claim 1 or 2, Features The second push-knot ring (6) is a closed circular ring inscribed in the surface of the sleeve (1).

4. The double knot pusher for transsphenoidal endoscopic surgery according to claim 1, Features When the connecting rod (7) is in a non-working state, a portion of the front end extending outward from the sleeve (1) is provided with an inclined surface (5) so that the heights of the first push-knot ring (4), the second push-knot ring (6) and the sleeve (1) are kept consistent.

5. The double knot pusher for transsphenoidal endoscopic surgery according to any one of claim 1, Features The handle extension portion of the first finger ring (3) and the handle extension portion of the second finger ring (2) are arranged at an angle.

6. The double knot pusher for transsphenoidal endoscopic surgery according to claim 1, Features The outer diameter of the first push-knot ring (4) is 1-2 mm.

7. The double knot pusher for transsphenoidal endoscopic surgery according to claim 1, Features The outer diameter of the second push-to-lock ring (6) plus the outer diameter of the sleeve (1) is the same as the outer diameter of the first push-to-lock ring (4).

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