CN109662742B

CN109662742B - Distraction instrument for laparoscopic surgery

Info

Publication number: CN109662742B
Application number: CN201910094075.3A
Authority: CN
Inventors: 张曦
Original assignee: Chongqing Tumour Institute
Current assignee: Chongqing Tumour Institute
Priority date: 2019-01-30
Filing date: 2019-01-30
Publication date: 2020-04-14
Anticipated expiration: 2039-01-30
Also published as: CN109662742A

Abstract

The invention relates to the technical field of medical instruments, and specifically discloses a spreading instrument for laparoscopic surgery, which comprises an operating rod, a first spring and a second spring. A fixing plate is fixedly connected in the through cavity, and the sliding plate and the fixing plate are connected by a first spring; a plurality of opening groups are installed on the side of the sliding plate away from the fixing plate, and each opening group includes two mounting seats arranged opposite each other. A strut is hinged on each mounting seat, the two struts are connected by a second spring, a connecting rod is fixedly connected to the side of the slide plate close to the fixing plate, the connecting rod penetrates the fixing plate, and the end of the connecting rod that is far away from the sliding plate is fixedly connected with a pulling rope. In the present invention, the sliding plate is pulled and slid by pulling the pulling rope, thereby realizing the opening and closing of the plurality of struts, the operation is convenient, and the opening effect is good. In addition, the strut can be completely retracted in the through cavity of the surgical rod, which reduces the volume occupied during storage and facilitates storage.

Description

Distraction instrument for laparoscopic surgery

Technical Field

The invention relates to the technical field of medical instruments, and particularly discloses a distraction instrument for laparoscopic surgery.

Background

With the rapid advance of the industrial manufacturing technology, the fusion of related subjects lays a firm foundation for the development of new technology and new method, and in addition, the intracavity operation is gradually developed by more and more skillful operation of doctors, thereby greatly increasing the operation selection opportunities of patients. Compared with the traditional open surgery, the laparoscopic surgery avoids a long incision and is beneficial to the recovery of the patient. In addition, in laparoscopic surgery, the laparoscopic lens can provide a wider and clearer visual field for a doctor, so that the laparoscopic lens is favorable for the doctor to complete the surgery more smoothly, and the surgical risk is reduced. Therefore, laparoscopic surgery is now very popular as a minimally invasive surgical approach.

In laparoscopic surgery, because the internal tissue shelters from the laparoscopic lens easily to influence the field of vision, and then influence the operation, consequently, the tissue that utilizes the distraction mechanism to shelter from the laparoscopic lens when laparoscopic surgery struts usually, and also, need utilize the distraction mechanism to carry the film to the intracavity after expand, laminate the film to the position that needs the film again. The existing expanding mechanism used in laparoscopic surgery is only provided with two expanding pieces which can be opened and closed, so that when the expanding pieces are opened, tissues are expanded in the up-down (left-right) direction, and the tissues in the left-right (up-down) direction are not expanded, so that the laparoscopic lens can be continuously shielded, and the effect of expanding the tissues is poor. In addition, in the cavity, the film is spread by the spreading action of the two spreaders, but the film is subjected to forces in only two directions, so that the area of the film after spreading is small, and it is sometimes difficult to completely cover the portion where the film is required, and the effect of spreading the film is poor.

Disclosure of Invention

The invention aims to provide a distraction instrument for laparoscopic surgery to solve the problem of poor distraction effect of a distraction mechanism in the existing laparoscopic surgery.

In order to achieve the purpose, the basic scheme of the invention is as follows: the distraction instrument for the laparoscopic surgery comprises a surgical rod, a first spring and a second spring, wherein a through cavity is formed in the surgical rod, a sliding plate is connected in the through cavity in a sliding manner, a fixing plate is fixedly connected in the through cavity, and the sliding plate is connected with the fixing plate through the first spring; one side that the fixed plate was kept away from to the slide is installed a plurality of groups that strut, and every group that struts all includes the mount pad of two relative settings, all articulates on every mount pad has the vaulting pole, and two vaulting poles pass through second spring coupling, and the slide is close to one side fixedly connected with connecting rod of fixed plate, and the connecting rod runs through the fixed plate, and the one end fixedly connected with stay cord of slide is kept away from to the connecting rod.

The working principle and the beneficial effects of the basic scheme are as follows:

1. pulling the pull rope to apply pulling force to the connecting rod, so that the sliding plate slides towards the direction of the fixing plate, the stay bar hinged on the mounting seat moves towards the direction of the fixing plate, the stay bar is folded under the limitation of the end part of the operation rod, and the stay bar can be completely contracted into the through cavity of the operation rod along with the increase of the sliding distance of the sliding plate; when the pull rope is released, the sliding plate slides in the direction away from the fixed plate under the action of the first spring, the support rod moves in the direction away from the fixed plate, and the support rod is gradually unfolded under the action of the second spring to unfold and fold the support rod. There are a plurality of groups of strutting in this basic scheme, consequently, the quantity of vaulting pole is more and be the even number, can strut the intracavity tissue from a plurality of directions, avoids the tissue to shelter from the peritoneoscope camera lens to can also strut the film from a plurality of directions, make the film expand along a plurality of directions, the film area after the expansion is great, can cover the position that needs the film completely, struts effectually.

2. In this basic scheme, can be through the displacement of control stay cord to the position of adjusting the slide, and then can adjust the angle of strutting of vaulting pole, with this the area of strutting of many vaulting poles of control.

3. In the basic scheme, a plurality of folded support rods can completely enter the through cavity of the operation rod, so that the space occupied during storage is small, and the storage is convenient.

Furthermore, a handheld part is installed at one end of the operation rod, which is far away from the stay bar, a handheld rod is hinged to the handheld part, a torsion spring is fixedly connected to the handheld part, and the other end of the torsion spring is fixedly connected to the handheld rod; the inside passageway that has seted up of handheld portion, the passageway communicates with logical chamber, the one end of stay cord keeping away from the connecting rod passes the passageway and holds pole fixed connection.

One end of the stay cord, which is far away from the connecting rod, is fixedly connected with the holding rod, at the moment, the initial state of the first spring is a compressed state, and the stay bar is furled in the through cavity of the operation rod. When needing the vaulting pole to strut, only need apply effort to the holding rod for the holding rod rotates to handheld portion direction, and the pulling force that the stay cord was applied to the connecting rod reduces in the twinkling of an eye, and the slide slides to the direction of keeping away from the fixed plate under the effect of first spring, and the vaulting pole stretches out gradually and leads to the chamber, and the vaulting pole struts gradually under the effect of second spring, and struts the angle and is decided to handheld portion direction pivoted angle by the holding rod, is decided by the user promptly. When the supporting rod needs to be folded, the holding rod is unfolded, the holding rod rotates under the action of the torsion spring to reset, the pull rope is pulled to reset, and therefore the supporting rod is folded into the through cavity, and operation is convenient. In the scheme, the stay bar is normally folded in the through cavity, so that the storage space occupied by the strutting instruments is small, and the strutting instruments can be stacked and stored without mutual influence.

Furthermore, the sliding plate and the fixing plate form a sealed cavity in the through cavity, the spreading group further comprises two oppositely arranged cylinder bodies, pistons are connected in the cylinder bodies in a sliding mode, the cylinder bodies are divided into an upper cavity and a lower cavity by the pistons, the pistons are fixedly connected with piston rods, one ends of the piston rods, far away from the pistons, are provided with lantern rings, and the supporting rods are located in the lantern rings; the slide plate is provided with an air passage which is communicated with the upper cavity and the sealing cavity.

Because go up the cavity and seal chamber intercommunication, consequently, when the slide slides to the fixed plate direction, the volume in seal chamber reduces, interior pressure increase, gas gets into in the cavity through the air flue, the interior pressure increase of going up the cavity, the piston slides to the cavity direction down, the piston rod of fixed connection on the piston passes through the lantern ring and exerts the effort to the vaulting pole, make two vaulting poles that the position is relative take place the relative motion, so, compare in basic scheme, not only increased the degree of drawing in of vaulting pole, still reduced the friction time of vaulting pole and operation rod tip, thereby reduce wearing and tearing between them.

Furthermore, the side wall of the lower chamber opposite to the piston is provided with a vent hole.

Since the interior of the lower chamber communicates with the outside, the sliding resistance of the piston is reduced.

Further, the mounting seat is fixedly mounted at the central part of the sliding plate.

Compared with the installation method that the installation seat is installed at the edge part or other parts of the sliding plate, the installation method that the installation seat is installed at the central part of the sliding plate has a larger opening or closing angle of the support rod under the same sliding distance of the sliding plate.

Furthermore, a ring groove is formed in one end, far away from the mounting seat, of the support rod.

When the film is stretched, the ring groove can fix the film, and the film is prevented from being separated from the support rod before being attached to the part of the cavity where the film is needed, so that the film attaching failure is avoided.

Drawings

Fig. 1 is a schematic structural diagram of a spreading instrument for laparoscopic surgery in a first embodiment and a second embodiment of the present invention;

FIG. 2 is a partial longitudinal cross-sectional view of a surgical rod according to one embodiment;

FIG. 3 is a left side view of the skateboard of FIG. 2;

FIG. 4 is a partial longitudinal cross-sectional view of a surgical rod with the struts in an expanded state in accordance with one embodiment of the present invention;

FIG. 5 is a partial longitudinal cross-sectional view of a surgical rod according to a second embodiment;

FIG. 6 is a left side view of the skateboard of FIG. 5;

fig. 7 is a partial longitudinal cross-sectional view of a surgical rod with the struts in an expanded state according to a second embodiment of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the surgical rod 1, the through cavity 2, the handheld part 3, the holding rod 4, the torsion spring 5, the channel 6, the sliding plate 7, the fixing plate 8, the first spring 9, the sealing cavity 10, the mounting seat 11, the supporting rod 12, the second spring 13, the cylinder body 14, the piston 141, the upper cavity 142, the lower cavity 143, the piston rod 144, the lantern ring 15, the air channel 16, the connecting rod 17 and the pull rope 18.

Example one

This embodiment is substantially as shown in fig. 1 and 2: laparoscopic surgery is with strutting apparatus, including operation pole 1, first spring 9 and second spring 13, seted up logical chamber 2 in the operation pole 1, the handheld portion 3 of right-hand member fixedly connected with of operation pole 1, articulated on the handheld portion 3 have a holding rod 4, and the three arch of fixedly connected with on the holding rod 4 facilitates the user and the application of force to holding rod 4. Fixedly connected with torsional spring 5 on the handheld portion 3, the other end fixed connection of torsional spring 5 is on holding rod 4. The interior of the handheld part 3 is provided with a channel 6, and the channel 6 is communicated with the through cavity 2.

The operating rod 1 is connected with a sliding plate 7 in the through cavity 2 in a sliding manner, a fixing plate 8 is fixedly connected in the through cavity 2, the fixing plate 8 is positioned on the right side of the sliding plate 7, and the sliding plate 7 is connected with the fixing plate 8 through a first spring 9.

A plurality of strutting sets are arranged on the left side wall of the sliding plate 7, and in the embodiment, the strutting sets are two sets. As shown in fig. 3, each of the propping groups includes two oppositely disposed mounting seats 11, the mounting seats 11 are fixedly connected to the center of the sliding plate 7, each of the mounting seats 11 is hinged to a supporting rod 12, the two supporting rods 12 are connected by a second spring 13, and a circular groove is formed in the left end of each of the supporting rods 12.

The right side wall of the sliding plate 7 is fixedly connected with a connecting rod 17, the connecting rod 17 penetrates through the fixing plate 8, the right end of the connecting rod 17 is fixedly connected with a pull rope 18, and the right end of the pull rope 18 penetrates through the channel 6 and is fixedly connected with the lower end of the holding rod 4.

Initially, the first spring 9 is in a compressed state, the strut 12 is stowed within the through-lumen 2 of the surgical rod 1, and the second spring 13 is in a compressed state.

The specific implementation process is as follows: when tissue in a cavity needs to be stretched in a laparoscopic surgery, the left end of the sterilized surgical rod 1 extends into the cavity from a surgical wound, when the left end of the surgical rod 1 reaches a part needing to be stretched, a medical worker (user) applies acting force to the holding rod 4 to enable the holding rod 4 to rotate anticlockwise by taking a hinged point of the holding rod 4 and the handheld part 3 as a circle center, the pull rope 18 is released, the left end of the pull rope 18 moves leftwards, the sliding plate 7 slides leftwards under the action of the first spring 9, the mounting seat 11 and the support rod 12 both move leftwards, the left end of the support rod 12 extends out of the through cavity 2, the support rod 12 continues to slide leftwards under the action of the first spring 9, the length of the support rod 12 extending out of the through cavity 2 is long, in the process, the support rod 12 is stretched under the action of the second spring 13 more and more, the stretching angle of the support rod 12 is increased along with the increase of the distance of leftward sliding plate 7, the medical staff (user) can control the rotation angle of the holding rod 4 as required, thereby controlling the opening angle of the stay bar 12. When the slide 7 is not slid leftward any more, the state of the stay 12 is as shown in fig. 4.

There are four vaulting poles 12 in this embodiment, consequently, can apply four ascending effort in the direction to the tissue that needs strut, compare in current operation strut mechanism and apply two ascending efforts in the direction to the tissue, the former makes the area that the tissue was strutted great, and the effect of strutting of tissue is better, provides wider, more clear field of vision for the doctor, reduces the operation risk.

When the operation rod 1 needs to be pulled out after the operation in the cavity is completed, the medical staff (user) releases the holding rod 4, the holding rod 4 rotates clockwise to reset under the action of the torsion spring 5, the pull rope 18 is pulled, the left end of the pull rope 18 moves rightwards, so that the connecting rod 17 is pulled to move rightwards, the sliding plate 7 slides rightwards, the mounting seat 11 and the support rod 12 move rightwards, when the support rod 12 moves rightwards, the support rod 12 is gradually folded under the limiting action of the left end of the operation rod 1, and the opening angle of the support rod 12 is gradually reduced until the support rod 12 is retracted into the through cavity 2. After the stay bar 12 is retracted into the through cavity 2, the medical staff (user) can pull out the surgical rod 1.

Example two

The present embodiment is different from the first embodiment in that: as shown in fig. 1, 5 and 6, the sliding plate 7 and the fixing plate 8 form a sealed cavity 10 in the through cavity 2, each of the distraction sets further includes a cylinder 14 disposed opposite to each other, a piston 141 is slidably connected in the cylinder 14, the piston 141 divides the cylinder 14 into an upper chamber 142 and a lower chamber 143, the piston 141 is fixedly connected with a piston rod 144, one end of the piston rod 144 away from the piston 141 is provided with a collar 15, and the strut 12 is located in the collar 15. The slide plate 7 is provided with an air passage 16, and the air passage 16 is communicated with the upper chamber 142 and the sealing cavity 10. The side wall of the lower chamber 143 opposite to the piston 141 is provided with a vent hole so that the interior of the lower chamber 143 is communicated with the outside, and resistance applied to the piston 141 during sliding is reduced.

Initially, the first spring 9 is in a compressed state, the collar 15 on the piston rod 144 exerts a force on the strut 12, so that the strut 12 is collapsed, and the strut 12 is collapsed in the through-cavity 2 of the surgical rod 1, and the second spring 13 is in a compressed state.

The specific implementation process is as follows: when tissue in a cavity needs to be expanded in a laparoscopic surgery, the left end of the sterilized surgical rod 1 extends into the cavity from a surgical wound, when the left end of the surgical rod 1 reaches a part needing to be expanded, medical personnel (users) apply acting force to the hand holding rod 4, make the grab bar 4 use the pin joint of grab bar 4 and handheld portion 3 as centre of a circle anticlockwise rotation, release stay cord 18, the left end of stay cord 18 moves left, slide 7 slides left under the effect of first spring 9, then, the volume of seal chamber 10 increases, interior pressure reduces, the gas in the upper chamber 142 flows into in the seal chamber 10 through air flue 16, piston 141 slides to upper chamber 142 direction, drive piston rod 144 to move to upper chamber 142 direction, the lantern ring 15 of fixing on piston rod 144 moves to upper chamber 142 direction, the lantern ring 15 no longer exerts the effort to vaulting pole 12, promptly the lantern ring 15 no longer limits the angle that struts of vaulting pole 12.

Gliding in-process left of slide 7, mount pad 11, cylinder body 14 and vaulting pole 12 all move left, the left end of vaulting pole 12 stretches out logical chamber 2, slide left along with slide 7 continues under the effect of first spring 9, vaulting pole 12 stretches out the length that leads to chamber 2 and is longer and longer, in-process, vaulting pole 12 struts under the effect of second spring 13, and along with slide 7 gliding distance increase left, the angle increase that vaulting pole 12 struts, therefore, medical personnel (user) can control the turned angle of holding pole 4 as required, thereby control vaulting pole 12 struts the angle. When the slide 7 is not slid leftward any more, the state of the stay 12 is as shown in fig. 7.

There are four vaulting poles 12 in this embodiment, consequently, can apply four ascending effort in the direction to the tissue that needs strut, compare in current operation strut mechanism and apply two ascending efforts in the direction to the tissue, the former makes the area that the tissue was strutted big, and the effect of strutting of tissue is better, provides wider, more clear field of vision for the doctor, reduces the operation risk.

When the operation rod 1 needs to be pulled out after the operation in the cavity is completed, the medical staff (user) releases the holding rod 4, the holding rod 4 rotates clockwise to reset under the action of the torsion spring 5, the pull rope 18 is pulled, the left end of the pull rope 18 moves rightwards, the connecting rod 17 is pulled to move rightwards, the sliding plate 7 slides rightwards, the mounting seat 11, the cylinder body 14 and the support rod 12 move rightwards, when the support rod 12 moves rightwards, the support rod 12 is gradually folded under the limiting action of the left end of the operation rod 1, and the opening angle of the support rod 12 is gradually reduced until the support rod 12 is retracted into the through cavity 2. In the process, the volume of the seal cavity 10 is reduced, the internal pressure is increased, the gas in the seal cavity 10 flows into the upper chamber 142 through the gas channel 16, the internal pressure of the upper chamber 142 is increased, the piston 141 is pushed to move downwards, then the piston rod 144 and the lantern ring 15 move towards the lower chamber 143, the lantern ring 15 applies acting force to the support rod 12, when the acting force applied to the support rod 12 by the lantern ring 15 is greater than the acting force applied to the support rod 12 by the second spring 13, the support rod 12 is further folded, at this time, the support rod 12 does not abut against the left end of the operation rod 1, and the sliding friction between the support rod 12 and the operation rod 1 is reduced. After the stay bar 12 is retracted into the through cavity 2, the medical staff (user) can pull out the surgical rod 1.

Similarly, when the film is required to be attached to the position needing the film in the laparoscopic surgery, the edge of the film is fixed in the annular groove at the left end of the support rod 12, after the surgical rod 1 extends into the cavity through the surgical wound, acting force is applied to the hand holding rod 4 according to the operation to enable the hand holding rod 4 to rotate anticlockwise, the support rod 12 is unfolded, four support rods 12 apply acting force in four directions to the film, the unfolded film is large in area and sufficient to cover the position needing the film, and the unfolding effect of the film is good. After the work of the laminating film is finished, the holding rod 4 is released according to the operation, so that the holding rod 4 is rotated and reset clockwise under the action of the torsion spring 5, the support rod 12 is folded and is collected into the through cavity 2, and the surgical rod 1 is pulled out.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the present invention.

Claims

1. The opening instrument for laparoscopic surgery, including an operating rod, is characterized in that: also includes a first spring and a second spring, the operating rod is provided with a through cavity, the through cavity is slidably connected with a sliding plate, and the through cavity is fixed A fixing plate is connected, and the sliding plate and the fixing plate are connected by a first spring; the side of the sliding plate away from the fixing plate is installed with several opening groups, and each opening group includes two mounting seats arranged opposite each other, each mounting seat A strut is hinged on the top, the two struts are connected by a second spring, a connecting rod is fixedly connected to the side of the slide plate close to the fixed plate, the connecting rod penetrates the fixed plate, and the end of the connecting rod far from the slide plate is fixedly connected with a pull rope; One end of the rod away from the support rod is installed with a hand-held part, the hand-held part is hinged with a hand-grip rod, the hand-held part is fixedly connected with a torsion spring, and the other end of the torsion spring is fixedly connected to the hand-grip rod; a channel is opened inside the hand-held part , the channel is communicated with the through cavity, the end of the pulling rope away from the connecting rod is fixedly connected to the handle rod through the channel; the sliding plate and the fixed plate form a sealed cavity in the through cavity, and the expansion group also includes two opposite The cylinder is slidably connected with a piston, the piston divides the cylinder into an upper chamber and a lower chamber, the piston is fixedly connected with a piston rod, the end of the piston rod away from the piston is installed with a collar, and the strut is located in the collar. inside; the slide plate is provided with an air channel, and the air channel is connected with the upper chamber and the sealing chamber.

2 . The spreading instrument for laparoscopic surgery according to claim 1 , wherein a vent hole is opened on the side wall of the lower chamber opposite to the piston. 3 .

3 . The spreading instrument for laparoscopic surgery according to claim 2 , wherein the mounting seat is fixedly mounted on the center of the slide plate. 4 .

4 . The spreading instrument for laparoscopic surgery according to claim 3 , wherein a ring groove is opened at one end of the strut away from the mounting seat. 5 .