CN216603010U

CN216603010U - Abdominal cavity puncture sheath

Info

Publication number: CN216603010U
Application number: CN202122184957.4U
Authority: CN
Inventors: 余香平
Original assignee: Shanghai Yingruida Medical Technology Co ltd
Current assignee: Shanghai Yingruida Medical Technology Co ltd
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2022-05-27
Anticipated expiration: 2031-09-09

Abstract

The utility model relates to an abdominal cavity puncture sheath, and belongs to the technical field of medical instruments. Comprises a sheath tube, a movable sleeve, a cutting knife, an eccentric saccule and an outer supporting leg; a movable sleeve penetrates through the sheath tube, and a cutting knife is arranged in the movable sleeve; the outer side wall of one end of the sheath tube, which is far away from the operator, is provided with an eccentric balloon, and the end of the sheath tube, which is close to the operator, is provided with an air bag air inlet; the outer wall of the sheath tube is provided with a movable outer supporting leg. A cutting knife is arranged at one end of the movable sleeve far away from the operator in a penetrating way; one end of the movable sleeve close to the operator is provided with a return spring. The utility model provides the disposable visual abdominal cavity puncture sheath which can realize atraumatic puncture, no surgical scar and controllable bidirectional elastic fixation.

Description

Abdominal cavity puncture sheath

Technical Field

The utility model relates to an abdominal cavity puncture sheath, and belongs to the technical field of medical instruments.

Background

With the development and progress of medicine, the traditional open surgery is gradually replaced by the new minimally invasive surgery. For example, conventional open surgery has been replaced by laparoscope (3D, 4D, robot), which has been successfully applied to surgical departments such as general surgery (gastrointestinal, hepatobiliary), urology, and gynecology. The prior laparoscopic surgery needs to be performed by means of an abdominal cavity puncture sheath, generally, each surgery needs at least three puncture sheaths (5mm, 10mm and 12mm), and the complicated surgery needs 5 to 6. However, the main disadvantages of the current puncture sheaths are: 1. the one-way thread structure (or step) is arranged outside the puncture sheath, namely, during puncture, the thread structure (or step) is small in the inward direction and slightly large in the outward direction, so that the sheath is clockwise and labor-saving when entering, and does not generate a cutting effect. 2. The currently used sheaths have no fixing device. Because the sheath is hollow, all surgical instruments need to enter and exit through the sheath core during surgery, the sheath is easy to be driven to move in and out, if the sheath moves towards the abdominal cavity, the motion of the instruments in the abdominal cavity is influenced due to the overlong sheath in the abdominal cavity, and the surgical operation is inevitably influenced; if the sheath moves outward, once the front end of the sheath moves to the muscle layer, the channel is lost, the instrument cannot smoothly reach the abdominal cavity, at this time, re-puncture is needed, at this time, the tissue must be injured again, and the operation time is prolonged. To prevent the sheath from moving outward, clinicians currently use a method of suturing the skin with a triangular needle thread on the body surface and then tying the thread to the thread structure (or steps) of the sheath to prevent the sheath from moving outward. However, this method cannot prevent the sheath from moving into the abdominal cavity, and once the sheath moves into the abdominal cavity, the clinician has only one method, namely, the sheath is pulled out to a proper position by hands by means of a surgical assistant, thereby facilitating the operation. 3. The operation forms centipede scars, which affects the beauty. Along with the improvement of living standard, people pay more and more attention to the beauty of postoperative scars, and especially when young people expose the abdomen of the beach or wear fashion clothes, the visual impact of the centipede scars is often inferior. Due to the above-mentioned drawback 2, in order to prevent the sheath from moving outward, the skin is sutured with a triangular needle tape. The triangular needle is inserted into and withdrawn from the skin, and the wound is in a triangular irregular pattern, so that scars (namely, one point) can be healed on all needle holes, the puncture hole after operation can be sutured in skin, and the centipede shape is formed after one line of the scars after operation. Therefore, the technical field needs an abdominal cavity puncture sheath which has no operation scar, no damage puncture and controllable bidirectional fixation.

Disclosure of Invention

The utility model aims to solve the technical problem of how to obtain an abdominal cavity puncture sheath which has no surgical scar, no damage puncture and controllable bidirectional fixation.

In order to solve the problems, the technical scheme adopted by the utility model is to provide an abdominal cavity puncture sheath, which comprises a sheath tube, a movable sleeve, a cutting knife, an eccentric saccule and an outer supporting leg; a movable sleeve penetrates through the sheath tube, and a cutting knife is arranged in the movable sleeve; the outer side wall of one end of the sheath tube far away from the operator is provided with an eccentric balloon, and one end of the sheath tube close to the operator is provided with an air bag air inlet; the outer wall of the sheath tube is provided with a movable outer supporting leg.

Preferably, a cutting knife is arranged at one end of the movable sleeve, which is far away from an operator, in a penetrating way; one end of the movable sleeve close to the operator is provided with a return spring.

Preferably, an air passage is arranged in the side wall of the sheath tube, one end of the air passage is communicated with the eccentric saccule, and the other end of the air passage is communicated with an air inlet of the air sac.

Preferably, an eyepiece is arranged on the outer side wall of one end of the sheath tube far away from the operator.

Preferably, the outer side wall of the sheath close to one side of the operator is provided with an external thread; the outer supporting leg is provided with an annular fixing ring, and the fixing ring is provided with an internal thread; the outer supporting leg is movably connected to the outer side wall of the sheath tube through threads.

Preferably, the fixing ring of the outer supporting leg is provided with a supporting protrusion facing the patient and used for preventing the abdominal cavity puncture sheath from entering the abdominal cavity, and the supporting protrusion is an elastic support.

Preferably, the support protrusion is provided as a rectangular parallelepiped support leg parallel to the central axis of the sheath tube.

Preferably, the outer wall of the sheath between the support protrusion and the end of the sheath remote from the operator is provided with a smooth, protrusion-free outer surface.

Preferably, one end of the sheath close to the operator is provided with a carbon dioxide inlet.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model can solve the defects of the prior art, reduce the puncture resistance, achieve the visual puncture and achieve the effect of non-injury puncture:

1. the utility model has no cutting damage: the front end of the abdominal cavity puncture sheath has no thread structure (or ladder), namely, the front section of the sheath is smooth, and no cutting injury exists in and out tissues.

2. The abdominal cavity puncture sheath is fixed without additional suture: an eccentric small balloon (not a balloon which is round along the sheath because a suture needle is a curved needle in the operation and is easy to cut the abdominal balloon of the sheath when being pulled out) is arranged at the back side of the front end of the sheath, and when the sheath enters the abdominal cavity, a small amount of air or normal saline is filled into the balloon, so that the balloon is expanded to prevent the sheath from moving outwards. The tail end of the sheath is provided with an external fixing device, when the sheath enters the abdominal cavity and is inflated or injected with normal saline, the sheath is slightly pulled outwards to enable the balloon to be tightly attached to the abdominal wall, the bottom of the external fixing device is tightly attached to the skin by adjusting the external fixing device, the sheath is prevented from moving towards the abdominal cavity, the sheath can be perfectly fixed at the moment, extra skin suture is not needed for fixing, therefore, no eye scar is formed, and the trouble of centipede scars is relieved.

3. Controllable fixation: the outer wall of the sheath is provided with a long thread structure of about 3cm, the outer fixing device comprises an internal thread structure, the outer fixing device can move downwards along the thread of the sheath and can be controllably adjusted according to the thickness of the abdominal wall, the outer fixing device is foldable or is set to be elastic, and the size of the abdominal wall can be 1cm (super thin crowd) after the outer fixing device is unfolded, so that the sheath can meet most of the crowd.

4. Puncture without damage: this pjncture needle is the elastic construction design, is the blunt head of plastics when just pasting skin promptly, and the skin can not be harmd to puncture sheath point end, but when exerting oneself slightly, and the blade in the plastics is automatic to be exposed, begins to break the skin, and along with the power way increases, drives the sheath and passes skin, subcutaneous tissue, muscle layer, in case break through the peritoneal layer, gets into the abdominal cavity promptly, blade the place ahead non-resistance this moment, then the blade is automatic to retract in the blunt head of plastics, and the blunt head in plastics top drives the sheath and gets into the abdominal cavity, can not harm intestinal etc. play the guard action.

5. The whole process visual device comprises: the portable bendable camera is arranged outside the device, the sheath can be guided under direct vision to complete the establishment of the channel, the whole process is visible in real time, the blood vessel is avoided, the damage is reduced, and the device is safe and reliable.

Drawings

Fig. 1 is a schematic structural view of the abdominal cavity puncture sheath of the present invention.

Reference numerals: 1. puncturing the abdominal cavity with a sheath; 2. a sheath tube; 3. a movable sleeve; 4. a return spring; 5. a cutting knife; 6. an eccentric balloon; 7. an outer support leg; 8. an eyepiece; 9. an air inlet of the air bag; CO 10₂An air inlet.

Detailed Description

In order to make the utility model more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings: as shown in fig. 1, the technical scheme adopted by the utility model is to provide an abdominal cavity puncture sheath 1, which comprises a sheath tube 2, a movable sleeve 3, a cutting knife 5, an eccentric sacculus 6 and an outer supporting leg 7; a movable sleeve 3 penetrates through the sheath tube 2, and a cutting knife 5 is arranged in the movable sleeve 3; the outer side wall of one end of the sheath tube 2 far away from the operator is provided with an eccentric balloon 6, and one end of the sheath tube 2 close to the operator is provided with an air bag air inlet 9; the outer wall of the sheath tube 2 is provided with a movable outer supporting leg 7. A cutting knife 5 is arranged at one end of the movable sleeve 3 far away from an operator in a penetrating way; one end of the movable sleeve 3 close to the operator is provided with a return spring 4. An air passage is arranged in the side wall of the sheath tube 2, one end of the air passage is communicated with the eccentric saccule 6, and the other end of the air passage is communicated with the air inlet 9 of the air sac. An ocular lens 8 is arranged on the outer side wall of one end of the sheath tube 2 far away from the operator. The outer side wall of the sheath tube 2 close to one side of the operator is provided with an external thread; the outer supporting leg 7 is provided with an annular fixing ring, and the fixing ring is provided with an internal thread; the outer supporting leg 7 is movably connected to the outer side wall of the sheath tube 2 through threads. The fixing ring of the outer supporting leg 7 is provided with a supporting protrusion facing the patient and used for preventing the abdominal cavity puncture sheath 1 from entering the abdominal cavity, and the supporting protrusion is an elastic support. The supporting protrusion is provided as a rectangular parallelepiped supporting leg parallel to the central axis of the sheath tube 2. The outer wall of the sheath tube 2 between the supporting protrusion and the end of the sheath tube 2 far away from the operator is provided with a smooth outer surface without protrusion. One end of the sheath tube 2 close to the operator is provided with a carbon dioxide inlet 10.

The use process of the utility model is as follows:

1. the doctor holds the abdominal cavity puncture sheath 1, and the one end that will keep away from the operator contacts the position that the puncture was waited to the belly, punctures with exerting oneself, and movable sleeve 3 compresses reset spring 4 and retreats, exposes cutting knife 5, cuts open the abdominal cavity.

2. One end of the abdominal cavity puncture sheath 1, which is far away from an operator, enters the abdominal cavity along with the cutting knife 5, and the return spring 4 returns the movable sleeve 3 to wrap the cutting knife 5 to prevent the cutting knife 5 from damaging other tissues because the front resistance disappears;

3. gas is injected into the eccentric saccule 6 through the air inlet 9 of the air sac, the eccentric saccule 6 is expanded, and the abdominal cavity puncture sheath 1 is prevented from moving to the outside of the body;

4. rotating the fixing ring of the outer supporting leg 7 to prop the supporting leg at the outer side of the abdomen; the abdominal cavity puncture sheath 1 is prevented from moving into the body;

5. the puncture process can be observed through the ocular lens 8, so that other tissues are prevented from being damaged; and (5) completing the puncture.

6. In the operation process, carbon dioxide gas is input into the abdominal cavity through a carbon dioxide gas inlet 10 arranged at one end of the sheath close to an operator, so that the abdominal cavity is bulged, and pneumoperitoneum is established to facilitate subsequent operations.

While the utility model has been described with respect to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model. Those skilled in the art can make various changes, modifications and equivalent arrangements, which are equivalent to the embodiments of the present invention, without departing from the spirit and scope of the present invention, and which may be made by utilizing the techniques disclosed above; meanwhile, any changes, modifications and variations of the above-described embodiments, which are equivalent to those of the technical spirit of the present invention, are within the scope of the technical solution of the present invention.

Claims

1. An abdominal cavity puncture sheath, which is characterized in that: comprises a sheath tube, a movable sleeve, a cutting knife, an eccentric saccule and an outer supporting leg; a movable sleeve penetrates through the sheath tube, and a cutting knife is arranged in the movable sleeve; the outer side wall of one end of the sheath tube far away from the operator is provided with an eccentric balloon, and one end of the sheath tube close to the operator is provided with an air bag air inlet; the outer wall of the sheath tube is provided with a movable outer supporting leg.

2. The laparoscopic puncture sheath according to claim 1, wherein: a cutting knife is arranged at one end of the movable sleeve, which is far away from an operator, in a penetrating way; one end of the movable sleeve close to the operator is provided with a return spring.

3. The laparoscopic puncture sheath according to claim 2, wherein: an air passage is arranged in the side wall of the sheath tube, one end of the air passage is communicated with the eccentric saccule, and the other end of the air passage is communicated with an air inlet of the air sac.

4. The laparoscopic puncture sheath according to claim 3, wherein: an ocular is arranged on the outer side wall of one end, away from the operator, of the sheath tube.

5. The laparoscopic puncture sheath according to claim 4, wherein: the outer side wall of one side of the sheath tube close to the operator is provided with an external thread; the outer supporting leg is provided with an annular fixing ring, and the fixing ring is provided with an internal thread; the outer supporting leg is movably connected to the outer side wall of the sheath tube through threads.

6. The laparoscopic puncture sheath according to claim 5, wherein: the fixing ring of the outer supporting leg is provided with a supporting protrusion facing the patient and used for preventing the abdominal cavity puncture sheath from entering the abdominal cavity, and the supporting protrusion is an elastic support.

7. The laparoscopic puncture sheath according to claim 6, wherein: the supporting projection is a cuboid supporting leg parallel to the central axis of the sheath tube.

8. The laparoscopic puncture sheath according to claim 6, wherein: the outer wall of the sheath pipe between the supporting protrusion and one end of the sheath pipe far away from an operator is provided with a smooth outer surface without protrusions.

9. The laparoscopic puncture sheath according to claim 8, wherein: and a carbon dioxide inlet is formed in one end, close to the operator, of the sheath tube.