Endoscope specimen fetching bag

Abstract

The utility model discloses an endoscope specimen fetching bag which comprises a sheath rod, sliding grooves are formed in the two sides of the sheath rod, a bag hoop extending into the sheath rod is arranged at one end of the sheath rod, a bag body is arranged on the portion, located outside the sheath rod, of the bag hoop, and a T-shaped connecting rod is arranged at the end, located in the sheath rod, of the bag hoop. The two ends of a transverse rod part of the T-shaped connecting rod penetrate through the sliding grooves in the two sides of the sheath rod respectively, the surface of the sheath rod is sleeved with a closing-in piece connected with the transverse rod part of the T-shaped connecting rod, the inner wall of the sheath rod is provided with a springback piece connected with the transverse rod part of the T-shaped connecting rod, and the end, away from the bag hoop, of the sheath rod is provided with an abutting piece. When the bag hoop needs to be repeatedly stretched into the body of a patient to collect the tissue of the patient, the bag hoop can be quickly unfolded again under the action of the resilience force of the resilience part by loosening the back-buckling force on the closing-up part, and the tissue can be conveniently and repeatedly contained more quickly in the operation process.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to an endoscope specimen collection bag. Background Art

[0002] An endoscopic specimen retrieval bag is a special medical device for collecting and holding surgical resections and conveniently removing them from the body. Generally speaking, an endoscopic specimen retrieval bag includes an inner sheath rod and an outer sheath rod. A collecting bag is provided at the end of the inner sheath rod tube to hold the resected tissues and organs. When the outer sheath rod enters the abdominal cavity, the collecting bag can collect the resected tissues. After collection, pull the inner sheath handle outward to tighten the bag mouth to remove the surgical specimens and resections.

[0003] When using the existing endoscopic specimen collection bag, the thumb controls the inner sheath rod, and the middle finger and index finger control the outer sheath rod. When tightening the bag opening, the thumb is usually used to pull the inner sheath rod outward to close the collection bag.

[0004] However, from an ergonomic point of view, when the fingers are in a naturally relaxed state, they are more inclined to grasp, that is, to curl inward. At the same time, the muscle structure of the palm, especially the finger flexors (muscles responsible for bending the fingers) are more developed than the finger extensors (muscles responsible for extending the fingers). This makes the inward movement of the fingers, that is, making a fist or grasping, more natural and powerful. The movement of curling the fingers inward involves more delicate control of the force, and the control of the force is more detailed, and neural feedback can be better used to adjust the force.

[0005] However, spreading the fingers outward is a non-routine action, which is usually not as frequent as grasping actions. When performing the spreading action, it is relatively difficult to control the force, especially when precise force control is required.

[0006] Therefore, in the process of removing the patient's tissue, if it is impossible to completely remove it in one go and multiple removals are required, it is necessary to collect the patient's tissue multiple times and open and close the bag multiple times.

[0007] Multiple opening and closing may cause the doctor to make errors in the pushing and pulling force of the inner sheath, resulting in incomplete opening of the bag, making it inconvenient to collect patient tissues, or the bag may be too open and tear due to the bag being too big, or incomplete closure, resulting in partial leakage when removing patient tissues, or too much shrinkage, causing the bag to be squeezed into the outer sheath, causing wear and tear on the bag. Summary of the invention

[0008] The purpose of the utility model is to provide an endoscopic specimen retrieval bag to address the problems existing in the prior art, so that doctors can more accurately control the opening and closing of the bag body and reduce the errors of the opening and closing.

[0009] To achieve the above-mentioned purpose, the present application proposes an endoscopic specimen retrieval bag, comprising a sheath rod, wherein slide grooves are provided on both sides of the sheath rod, one end of the sheath rod is provided with a bag hoop extending to the inside of the sheath rod, the part of the bag hoop located outside the sheath rod is provided with a bag body, the end of the bag hoop located inside the sheath rod is provided with a T-shaped connecting rod, the two ends of the T-shaped connecting rod cross bar portion respectively pass through the slide grooves on both sides of the sheath rod, the surface of the sheath rod is provided with a closing piece connected to the T-shaped connecting rod cross bar portion, the inner wall of the sheath rod is provided with a rebound piece connected to the T-shaped connecting rod cross bar portion, and the end of the sheath rod away from the bag hoop is provided with a resistance piece.

[0010] When in use, the doctor passes the thumb through the resistance piece, and the index finger and middle finger through the closing piece respectively. When the bag body receives the patient's diseased tissue, the index finger and middle finger are retracted toward the thumb to pull the T-shaped connecting rod, thereby shrinking the bag hoop and closing the bag body. The traditional thumb outward movement to control the contraction of the bag opening is improved to the index finger and middle finger inward movement to control the contraction of the bag opening. In comparison, the control accuracy of the tightening of the bag opening is effectively improved. Moreover, due to the limitation of the slide groove, the moving distance of the closing piece is limited, which fundamentally avoids the problem of wear of the bag body caused by the bag hoop being over-retracted into the sheath rod. In addition, when it is necessary to repeatedly reach into the patient's body to collect the patient's tissue, it is only necessary to release the retraction force on the closing piece. Under the action of the rebound force of the rebound piece, the bag hoop can be quickly reopened, so that the tissue can be repeatedly contained faster during the operation.

[0011] Optionally, an inner wall of the sheath rod near one end of the bag hoop is provided with a flared opening, and a surface of the sheath rod near one end of the abutment member is provided with a limiting convex ball matched with the closing member.

[0012] The expansion can reduce the friction between the bag hoop and the sheath rod when the bag hoop shrinks, and the limiting convex ball can clamp the closing piece, so that the bag hoop shrinks inside the sheath rod before being inserted into the patient's body, thereby facilitating the sheath rod to be inserted into the patient's body.

[0013] Optionally, the bag hoop includes a bag mouth hoop and a rod inner hoop connected to the bag mouth hoop.

[0014] Optionally, the bag hoop is in the shape of a ring with a notch, the inner diameter of the bag hoop is larger than the diameter of the sheath rod, the bag hoop is a memory steel wire, and the bag hoop is located outside the sheath rod.

[0015] The bag body is arranged on the bag mouth hoop. The bag mouth hoop made of memory steel wire has good recovery performance and can quickly return to its original shape after deformation.

[0016] Optionally, the rod inner hoop is "U"-shaped, the width of the rod inner hoop is smaller than the inner diameter of the sheath rod, the main body of the rod inner hoop extends to the inside of the sheath rod, and the connection between the rod inner hoop and the bag mouth hoop is arc-shaped.

[0017] The two ends of the inner hoop of the rod make the closing state of the bag hoop more uniform and the closing speed faster, and the connection between the inner hoop of the rod and the bag hoop is arc-shaped to avoid sharp corners and make the bag hoop smoother when shrinking.

[0018] Optionally, the T-shaped connecting rod is connected to the middle part of the inner hoop of the rod.

[0019] When pulling the T-type connecting rod, let the inner hoop of the rod shrink the bag hoop evenly.

[0020] Optionally, the closing member includes a slide tube which is sleeved on the surface of the sheath rod and connected to the cross bar of the T-shaped connecting rod, and finger rings arranged on both sides of the slide tube, and a groove which is adapted to the limiting convex ball is formed on the inner wall of the slide tube.

[0021] Optionally, the resilient member includes a fixing ring fixed to the inner wall of the sheath rod, a spring member arranged on one side of the fixing ring, and a connecting ring arranged at the other end of the spring member and fixedly connected to the cross bar portion of the T-type connecting rod, and the T-type connecting rod passes through the fixing ring, the spring member and the connecting ring.

[0022] The elastic force of the resilient member actively applies an expanding force to the bag hoop, thereby making the bag hoop expand faster again.

[0023] Optionally, the abutment member includes a transition strip disposed at one end of the sheath rod away from the bag hoop and a resisting ring disposed at the other end of the transition strip.

[0024] Compared with the prior art, the utility model has the following beneficial effects: 1. When the doctor uses the bag, the thumb passes through the resistance piece, and the index finger and the middle finger pass through the closing piece respectively. When the bag receives the patient's diseased tissue, the index finger and the middle finger buckle back toward the thumb to pull the T-shaped connecting rod, so that the bag hoop shrinks, thereby closing the bag. The traditional thumb outward movement to control the contraction of the bag opening is improved to the index finger and the middle finger buckling inward to control the contraction of the bag opening. In comparison, the control accuracy of the bag opening tightening is effectively improved. Moreover, due to the limitation of the slide slot, the moving distance of the closing piece is limited. 1. The bag hoop is designed to be folded and retracted to the sheath rod, which fundamentally avoids the problem of the bag body being worn out due to the bag hoop being over-retracted into the sheath rod; 2. When it is necessary to repeatedly insert the bag hoop into the patient's body to collect the patient's tissue, it is only necessary to release the rebate force on the closing piece, and the bag hoop can be quickly re-expanded under the action of the rebound force of the rebound piece, so that the tissue can be repeatedly and quickly contained during the operation; 3. The expansion of the mouth can reduce the friction between the bag hoop and the sheath rod when it is contracted, and the limiting convex ball can clamp the closing piece, so that the bag hoop can be retracted inside the sheath rod before being inserted into the patient's body, thereby facilitating the sheath rod to be inserted into the patient's body. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1This is a schematic cross-sectional view of an endoscope specimen retrieval bag of the utility model;

[0026] Figure 2 This is a front view of an endoscope specimen retrieval bag of the utility model;

[0027] Figure 3 This is a top view of an endoscope specimen retrieval bag of the utility model;

[0028] Figure 4 This is a schematic diagram of the connection between the bag hoop and the connecting rod of the utility model;

[0029] Figure 5 The utility model is a three-dimensional diagram of an endoscope specimen retrieval bag.

[0030] In the figure: 1, sheath rod; 11, slide groove; 12, limit convex ball; 2, bag hoop; 21, bag mouth hoop; 22, rod inner hoop; 3, bag body; 4, T-type connecting rod; 5, closing piece; 51, slide cylinder; 52, finger ring; 6, rebound piece; 7, resistance piece; 71, transition strip; 72, resistance ring. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "middle", "upper", "lower", "left", "right", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0033] like Figure 1-3 As shown, the specific scheme of the embodiment is as follows: an endoscope specimen retrieval bag includes a sheath rod 1, both sides of the sheath rod 1 are provided with slide grooves 11, and one end of the sheath rod 1 is provided with a bag hoop 2 extending into the interior of the sheath rod 1.

[0034] In this embodiment, the sheath rod 1 is a hollow rod, and an inner wall of the sheath rod 1 close to one end of the bag hoop 2 is provided with a flared opening, which can reduce the friction between the bag hoop and the sheath rod 1 when the bag hoop contracts.

[0035] like Figure 4 As shown, the bag hoop 2 comprises a bag mouth hoop 21 and a rod inner hoop 22 connected with the bag mouth hoop 21 .

[0036] The bag hoop 21 is annular with a notch, the inner diameter of the bag hoop 21 is larger than the diameter of the sheath rod 1, and the bag hoop 21 is a memory steel wire. The bag hoop 21 made of the memory steel wire has good recovery and can quickly recover to its original shape after deformation. The bag hoop 21 is located outside the sheath rod 1, and the bag body 3 is arranged on the bag hoop 21.

[0037] The rod inner hoop 22 is "U"-shaped, the width of the rod inner hoop 22 is smaller than the inner diameter of the sheath rod 1, the main body of the rod inner hoop 22 extends to the inside of the sheath rod 1, and the connection between the rod inner hoop 22 and the bag mouth hoop 21 is arc-shaped.

[0038] After being pulled, the rod inner hoop 22 can simultaneously shrink the two ends of the bag hoop 21, making the bag hoop 21 more evenly closed and closing faster. In addition, the connection between the rod inner hoop 22 and the bag hoop 21 is arc-shaped to avoid sharp corners, making the bag hoop 21 more gentle when shrinking.

[0039] like Figure 1 As shown, a T-shaped connecting rod 4 is provided at one end of the bag hoop 2 located inside the sheath rod 1. The T-shaped connecting rod 4 is connected to the middle of the rod inner hoop 22. When the T-shaped connecting rod 4 is pulled, the rod inner hoop 22 can evenly shrink the bag mouth hoop 21.

[0040] Among them, the two ends of the cross bar of the T-shaped connecting rod 4 pass through the sliding grooves 11 on both sides of the sheath rod 1 respectively, and a closing piece 5 connected to the cross bar of the T-shaped connecting rod 4 is sleeved on the surface of the sheath rod 1. The T-shaped connecting rod 4 in the sheath rod 1 can be pulled by sliding the closing piece 5.

[0041] like Figure 1 As shown, the closing member 5 includes a slide tube 51 which is sleeved on the surface of the sheath rod 1 and connected to the cross bar portion of the T-shaped connecting rod 4 , and finger rings 52 which are arranged on both sides of the slide tube 51 .

[0042] like Figure 2 or Figure 5 As shown, it should be noted that a limiting convex ball 12 is provided on the surface of the sheath rod 1 close to the end of the abutment 7 , and the limiting convex ball 12 is made of plastic with good elasticity, and a groove adapted to the limiting convex ball 12 is opened on the inner wall of the slide cylinder 51 .

[0043] The limiting convex ball 12 can clamp the slide tube 51, so that the bag hoop is retracted inside the sheath rod 1 before being inserted into the patient's body, thereby facilitating the sheath rod to be inserted into the patient's body.

[0044] When in use, the slide tube 51 can be pushed out of the range of the limiting convex ball 12 by slightly spreading the index finger and the ring finger.

[0045] A resilient member 6 connected to the cross bar portion of the T-type connecting rod 4 is provided on the inner wall of the sheath rod 1. The resilient member 6 includes a fixing ring fixed to the inner wall of the sheath rod 1, a spring member arranged on one side of the fixing ring, and a connecting ring arranged at the other end of the spring member and fixedly connected to the cross bar portion of the T-type connecting rod 4. The T-type connecting rod 4 passes through the fixing ring, the spring member and the connecting ring.

[0046] The elastic force of the resilient member 6 actively applies an unfolding force to the bag hoop 2, thereby increasing the speed at which the bag hoop 2 unfolds again.

[0047] like Figure 5 As shown, in this embodiment, a resisting member 7 is provided at one end of the sheath rod 1 away from the bag hoop 2 , and the resisting member 7 includes a transition strip 71 provided at the end of the sheath rod 1 away from the bag hoop 2 and a resisting ring 72 provided at the other end of the transition strip 71 .

[0048] Working principle: When in use, the doctor passes the thumb through the resistance piece 7, and the index finger and middle finger pass through the closing piece 5 respectively. When the bag body 3 receives the patient's diseased tissue, the index finger and middle finger are retracted in the direction of the thumb to pull the T-shaped connecting rod 4, thereby shrinking the bag hoop 2 and closing the bag body 3. When it is necessary to repeatedly reach into the patient's body to collect the patient's tissue, the retraction force on the closing piece 5 is released, and under the action of the rebound force of the rebound piece 6, the bag hoop 2 can be quickly reopened, so that the bag body 3 can receive the patient's tissue faster.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An endoscope specimen collection bag, characterized in that: The invention comprises a sheath rod (1), wherein both sides of the sheath rod (1) are provided with slide grooves (11), one end of the sheath rod (1) is provided with a bag hoop (2) extending into the interior of the sheath rod (1), the part of the bag hoop (2) located outside the sheath rod (1) is provided with a bag body (3), the end of the bag hoop (2) located inside the sheath rod (1) is provided with a T-shaped connecting rod (4), the two ends of the cross bar portion of the T-shaped connecting rod (4) respectively pass through the slide grooves (11) on both sides of the sheath rod (1), the surface of the sheath rod (1) is sleeved with a closing piece (5) connected to the cross bar portion of the T-shaped connecting rod (4), the inner wall of the sheath rod (1) is provided with a rebound piece (6) connected to the cross bar portion of the T-shaped connecting rod (4), and the end of the sheath rod (1) away from the bag hoop (2) is provided with a resistance piece (7).

2. The endoscopic specimen retrieval bag according to claim 1, characterized in that: The sheath rod (1) is a hollow rod, and an inner wall of the sheath rod (1) close to one end of the bag hoop (2) is provided with a flared opening, and a surface of the sheath rod (1) close to one end of the abutment member (7) is provided with a limiting convex ball (12).

3. The endoscopic specimen retrieval bag according to claim 1, characterized in that: The bag hoop (2) comprises a bag mouth hoop (21) and a rod inner hoop (22) connected to the bag mouth hoop (21).

4. The endoscopic specimen retrieval bag according to claim 3, characterized in that: The bag mouth hoop (21) is in the shape of a ring with a notch, the inner diameter of the bag mouth hoop (21) is larger than the diameter of the sheath rod (1), the bag mouth hoop (21) is a memory steel wire, and the bag mouth hoop (21) is located outside the sheath rod (1).

5. The endoscopic specimen retrieval bag according to claim 3, characterized in that: The rod inner hoop (22) is U-shaped, the width of the rod inner hoop (22) is smaller than the inner diameter of the sheath rod (1), the main body of the rod inner hoop (22) extends into the interior of the sheath rod (1), and the connection between the rod inner hoop (22) and the bag mouth hoop (21) is in an arc shape.

6. The endoscopic specimen retrieval bag according to claim 3, characterized in that: The T-shaped connecting rod (4) is connected to the middle part of the rod inner hoop (22).

7. The endoscopic specimen retrieval bag according to claim 2, characterized in that: The closing member (5) comprises a slide tube (51) sleeved on the surface of the sheath rod (1) and connected to the cross bar portion of the T-shaped connecting rod (4), and finger rings (52) arranged on both sides of the slide tube (51), and a groove adapted to the limiting convex ball (12) is formed on the inner wall of the slide tube (51).

8. The endoscopic specimen retrieval bag according to claim 1, characterized in that: The resilient member (6) comprises a fixing ring fixed to the inner wall of the sheath rod (1), a spring member arranged on one side of the fixing ring, and a connecting ring arranged at the other end of the spring member and fixedly connected to the crossbar portion of the T-shaped connecting rod (4), the T-shaped connecting rod (4) passing through the fixing ring, the spring member and the connecting ring.

9. The endoscopic specimen retrieval bag according to claim 1, characterized in that: The abutment member (7) comprises a transition strip (71) arranged at one end of the sheath rod (1) away from the bag hoop (2), and a butt ring (72) arranged at the other end of the transition strip (71).

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