Laparoscopic hysterectomy uterine traction device

Abstract

The present invention relates to a hysterectomy instrument, specifically a uterine traction device for laparoscopic hysterectomy, which includes a cannula that can be inserted into the laparoscopic puncture hole. A driving mechanism and an elastic lasso are arranged on the cannula. The driving mechanism drives the elastic lasso to move along the axial direction of the cannula. The elastic lasso that moves out of the cannula can be sleeved and fixed on the uterine body of the free part of the uterus. The present invention adopts an elastic lasso. After the ligaments beside the uterus are transected, the elastic lasso can be fixed on the uterine body of the free part, and both ends of the elastic lasso can be connected to the traction lines inserted through the TROCAR holes in the left and right lower abdomens. The uterine body is tractioned through the traction lines to control the left and right swing of the uterus, so as to expose the surgical field, thus avoiding the lifting operation of the uterus, reducing the surgical difficulty, and reducing surgical complications.

Description

Technical Field

[0001] The present invention relates to an instrument for hysterectomy, specifically a uterine traction device for laparoscopic hysterectomy. Background Art

[0002] Hysterectomy is a common gynecological operation and is a basic surgical method for treating benign and malignant diseases of the uterus and even adnexa. According to the QM classification, due to different resection scopes, hysterectomy can be divided into simple hysterectomy (Type A), subtotal extensive hysterectomy (Type B), and extensive hysterectomy (Type C). The approaches include abdominal hysterectomy, vaginal hysterectomy, laparoscopic hysterectomy, and laparoscopically assisted vaginal hysterectomy. Among them, laparoscopic hysterectomy has been widely used in clinical practice due to its advantages such as good surgical vision, easy to master, few complications, small surgical trauma, and rapid postoperative recovery.

[0003] In laparoscopic hysterectomy, in order to better expose the tissues on both sides of the uterus and facilitate surgical operation, the uterine lifting operation is often required, that is, the uterine lifting rod or uterine lifting cup is inserted into the uterine cavity through the vagina, and the uterine position is changed by swinging the uterine lifting device, making it easier for surgical operation. However, in recent years, there have been doubts about uterine lifting, such as the damage to the endometrium caused by uterine lifting, especially during cervical cancer surgery. Due to the stimulation and friction of the uterine lifting operation on the tumor lesion, it violates the principle of no-tumor, affecting the surgical prognosis. Therefore, in recent years, many operations, especially laparoscopic cervical cancer surgery, do not recommend uterine lifting. However, due to the lack of uterine lifting, when the ligaments around the uterus have been transected, the uterine tissue has no traction, is difficult to move, and exposes the surgical field, resulting in a significant increase in the surgical difficulty and a large number of surgical complications. Summary of the Invention

[0004] In view of the above technical problems, the present invention provides a uterine traction device for laparoscopic hysterectomy that can avoid uterine lifting.

[0005] The technical solution adopted by the present invention is: a uterine traction device for laparoscopic hysterectomy, including a sleeve that can extend into the laparoscopic puncture hole. A driving mechanism and an elastic lasso are provided on the sleeve. The driving mechanism drives the elastic lasso to move along the axial direction of the sleeve, and the elastic lasso that moves out of the sleeve can be sleeved and fixed on the uterine body of the free part of the uterus.

[0006] Preferably, the elastic lasso is cross-wound into a loop, and its two ends are arranged inside the sleeve and are driven to move by the driving mechanism. The loop part of the elastic lasso extends out of the sleeve and can be fixed on the uterine body of the free part of the uterus.

[0007] Preferably, one end of the elastic lasso is a free end, and a buckle is arranged in the middle of the free end. The other end of the elastic lasso passes through the buckle to form a cross shape.

[0008] Preferably, the buckle includes a hollow frame formed according to the cross-sectional shape of an elastic lasso and convex teeth provided on the inner wall of the hollow frame. A plurality of tooth grooves are correspondingly formed at the other end of the elastic lasso. When the other end passes through the hollow frame, the convex teeth can be snapped into the corresponding tooth grooves.

[0009] Preferably, the driving mechanism includes a plunger disposed in the sleeve and a hollow push-pull rod that drives the plunger to move axially along the sleeve. A push rod is provided in the inner cavity of the push-pull rod. The push rod passes through the plunger and can push the hollow frame to move. When the plunger presses on the other end of the elastic lasso, the push rod pushes the hollow frame to move until its convex teeth are snapped into the designated tooth grooves.

[0010] Preferably, a notch is provided on one side of the plunger, and the notch can accommodate the tail of the free end of the elastic lasso; the other side of the plunger is conical, and the conical plunger wall can press the other end of the elastic lasso.

[0011] Preferably, through holes are provided at the tails of both ends of the elastic lasso, and the two through holes can be connected to the traction lines extending from the left and right lower abdominal TROCAR holes respectively.

[0012] As can be seen from the above technical solutions, the present invention uses an elastic lasso. After the ligaments of the parauterine part are transected, the elastic lasso can be fixed on the free part of the uterine body, and both ends of the elastic lasso can be connected to the traction lines extending from the left and right lower abdominal TROCAR holes. The uterine body is tractioned through the traction lines to control the left and right swing of the uterus, so as to expose the surgical field of view, thereby avoiding the uterine lifting operation, reducing the surgical difficulty, and reducing surgical complications. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of the present invention when the lasso is in use.

[0014] Figure 2 It is a schematic structural diagram of the present invention when pulling.

[0015] Figure 3 It is a schematic structural diagram of the plunger of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0016] The present invention will be described in detail below in conjunction with Figure 1 、 Figure 2 and Figure 3 The present invention will be described in detail. Here, the schematic embodiments of the present invention and the descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0017] The present invention provides a uterine traction device for laparoscopic hysterectomy, which includes a cannula 1 that can extend into the laparoscopic puncture hole. A driving mechanism 2 and an elastic lasso 3 are provided on the cannula. The driving mechanism drives the elastic lasso to move along the axial direction of the cannula. The elastic lasso that moves out of the cannula can be sleeved and fixed on the uterine body of the free part of the uterus. After the ligaments beside the uterus are transected, the elastic lasso can be fixed on the uterine body of the free part. This structure can be retracted into the cannula at the initial stage of use, facilitating placement into the abdominal cavity through the laparoscopic puncture hole. The present invention uses a sterile elastic lasso, which is convenient for storage on the one hand and avoids damaging the uterus on the other hand.

[0018] Specifically, the elastic lasso is cross-wound into a loop, and its two ends are arranged inside the cannula and driven to move by the driving mechanism. At the initial stage of use, the driving mechanism can drive the elastic lasso to be retracted into the cannula; after the driving mechanism drives the loop part of the elastic lasso to extend out of the cannula, the loop part of the elastic lasso can be sleeved and fixed on the uterine body of the free part of the uterus to achieve the fixation of the uterus. Preferably, one end of the elastic lasso is a free end, and a buckle 4 is provided in the middle of the free end. The other end of the elastic lasso passes through the buckle to form a cross shape, so as to ensure that the lasso will not loosen.

[0019] Furthermore, the buckle 4 includes a hollow frame body 41 formed according to the cross-sectional shape of the elastic lasso and convex teeth 42 provided on the inner wall of the hollow frame body. Several tooth grooves 43 are correspondingly formed at the other end of the elastic lasso. When the other end passes through the hollow frame body, the convex teeth can be engaged into the corresponding tooth grooves, so as to adjust the fixing space of the loop part according to the size of the uterus and ensure the more stable fixation of the elastic lasso. Specifically, the driving mechanism 2 includes a plunger 21 arranged inside the cannula and a hollow push rod 22 that drives the plunger to move along the axial direction of the cannula. A push rod 23 is provided in the inner cavity of the push rod. The push rod passes through the plunger to push the hollow frame body to move. When the plunger presses the other end of the elastic lasso, the push rod pushes the hollow frame body to move until its convex teeth are engaged into the designated tooth grooves. When the other end of the elastic lasso is pressed, the push rod pushes the hollow frame body to move, making the fixing space of the loop part smaller, so as to fix the uterus. At the same time, the cooperation of the convex teeth and the tooth grooves can prevent loosening after fixation. The cooperation of the convex teeth and the tooth grooves is similar to the existing wire harness belt, which can be easily tightened and cannot be easily loosened.

[0020] Preferably, a notch 24 is provided on one side of the plunger, and the notch can accommodate the tail of the free end of the elastic lasso; the other side of the plunger is conical, and the conical plunger wall can press the other end of the elastic lasso, so as to ensure that the fixing space of the loop part of the elastic lasso can gradually become smaller. At the initial stage of the operation, the elastic lasso is completely accommodated in the sleeve, and then the other end of the elastic lasso can be pressed against the inner wall of the sleeve by the plunger, and the elastic lasso is gradually pushed out of the sleeve. At this time, the fixing space of the loop part of the elastic lasso is large enough, and the automatic end of the elastic lasso passes through the notch without interfering with the movement of the elastic lasso; when the elastic lasso is pushed to directly below the free part of the uterine body, first drive the elastic lasso to move upward so that the uterus is located in the fixing space of the elastic lasso, and then move the ejector rod to move the hollow frame body, and the convex teeth will be engaged from one tooth groove into another tooth groove, so as to fix the elastic lasso on the uterus; then pull back the plunger and the ejector rod to loosen the other end of the elastic lasso, and then withdraw the sleeve to expose both ends of the elastic lasso, thus realizing the fixation of the uterus.

[0021] Through holes 31 are provided at the tails of both ends of the elastic lasso of the present invention, and the two through holes can be connected to the traction lines 5 extending from the left and right lower abdominal TROCAR holes respectively. Since both ends of the elastic lasso are exposed after the uterus is fixed, hooks can be provided at the ends of the traction lines to directly hook the through holes at both ends of the elastic lasso to achieve traction. The present invention connects the traction lines on the left and right sides of the fixed uterus part respectively to pull the uterine body and move the uterine body. The two traction lines are led out from the left and right lower abdominal TROCAR holes, and the length of the traction lines is controlled on the operating table to control the left and right swing of the uterus, thus avoiding lifting the uterus.

Claims

1. Laparoscopic hysterectomy uterine traction device, characterized in that: It includes a cannula that can extend into the laparoscopic puncture hole. A driving mechanism and an elastic lasso are arranged on the cannula. The driving mechanism drives the elastic lasso to move along the axial direction of the cannula. The elastic lasso that moves out of the cannula can be sleeved and fixed on the uterine body of the free part of the uterus; one end of the elastic lasso is a free end, and a buckle is arranged in the middle of the free end. The other end of the elastic lasso passes through the buckle to form a cross shape; the buckle includes a hollow frame formed according to the cross-sectional shape of the elastic lasso and convex teeth arranged on the inner wall of the hollow frame. Several tooth grooves are correspondingly formed at the other end of the elastic lasso. When the other end passes through the hollow frame, the convex teeth can be stuck into the corresponding tooth grooves; the driving mechanism includes a plunger arranged in the cannula and a hollow push rod that drives the plunger to move along the axial direction of the cannula. A push rod is arranged in the inner cavity of the push rod. The push rod passes through the plunger and can push the hollow frame to move. When the plunger presses the other end of the elastic lasso, the push rod pushes the hollow frame to move until its convex teeth are stuck into the specified tooth grooves; through holes are arranged at the tails of both ends of the elastic lasso. The two through holes can be connected to traction lines respectively extending from the left and lower right abdominal TROCAR holes. Hooks are arranged at the ends of the traction lines to hook the through holes at both ends of the elastic lasso.

2. The laparoscopic hysterectomy uterine traction device according to claim 1, characterized in that: The elastic lasso is cross-wound into a circle, and its two ends are arranged in the cannula and driven to move by the driving mechanism. The circular part of the elastic lasso extends out of the cannula and can be fixed on the uterine body of the free part of the uterus.

3. The laparoscopic hysterectomy uterine traction device according to claim 1, wherein: A notch is arranged on one side of the plunger, and the notch can accommodate the tail of the free end of the elastic lasso; the other side of the plunger is conical, and the conical plunger wall can press the other end of the elastic lasso.

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