CN219480239U - Nucleus pulposus pincers - Google Patents

Abstract

The present utility model provides a nucleus pulposus clamp comprising a channel for receiving tissue in the occlusal cavity; a crushing portion for crushing the tissue in the occlusion cavity; the power motor is in transmission connection with the crushing part and is used for providing power for the crushing part; the delivery portion is configured to provide a force to the tissue in the access channel that is transferred outside of the channel. Along with the operation, more and more tissues gradually enter the channel, the temporary storage function of the tissues can be achieved through the channel, the tissues are further transferred to the outside of the nucleus pulposus clamp under the drive of the conveying part, the nucleus pulposus and other soft tissues can be removed once in vivo by the instrument, the nucleus pulposus clamp can be directly taken out of a human body after the tissues are separated once, the operation efficiency is improved, and the infection risk brought by the nucleus pulposus clamp entering and exiting the human body for many times can be avoided.

Description

Nucleus pulposus pincers

Technical Field

The utility model relates to the technical field of surgical instruments, in particular to a nucleus pulposus clamp.

Background

At present, a nucleus pulposus clamp is frequently used in bone surgery such as nuclectomy and the like, is used as an auxiliary device in bone surgery and is mainly used for taking out degenerated nucleus pulposus, free nucleus pulposus and other soft tissues in an intervertebral disc.

The traditional nucleus pulposus pincers comprise an upper clamp plate, a lower clamp plate, an opening handle and the like, and in a natural state, the handle is in an opening state due to the action of a spring, the upper clamp plate and the lower clamp plate are in an opening state, and when external force acts on the opening handle, the upper panel and the lower panel are mutually closed, so that the nucleus pulposus tissues are gripped by biting. In the nucleus pulposus pliers in the prior art, after the nucleus pulposus pliers finish grabbing tissues, the grabbed tissues need to be repeatedly taken out of the human body for many times, then the nucleus pulposus pliers are put into the human body again to repeatedly grab the tissues, the steps are excessively complicated, time-consuming, labor-consuming and low in efficiency, meanwhile, because the nucleus pulposus pliers need to enter and exit the human body for many times, certain pollution is inevitably caused in the human body, and further the infection of a patient is caused after operation.

Disclosure of Invention

Therefore, the utility model aims to solve the technical problem that the nucleus pulposus forceps in the prior art need to enter and exit the human body for many times in the operation process to realize the extraction of tissues, and the defect that the infection in the human body is easy to occur is overcome.

To this end, the utility model provides a nucleus pulposus clamp comprising: the fixed handle and the movable handle are hinged with each other; the movable clamp body is connected with the movable handle, and the movable clamp body is hinged with a movable clamp; the fixed clamp body is connected with the fixed handle, a fixed clamp is arranged on the fixed clamp body, and a meshing cavity is formed between the movable clamp and the fixed clamp; a channel in communication with the bite chamber for receiving tissue in the bite chamber; a crushing portion for crushing the tissue in the occlusion cavity; the power motor is in transmission connection with the crushing part; a delivery portion for delivering tissue into the passageway to a rear portion of the passageway.

The utility model provides a pair of nucleus pulposus pliers, wherein the conveying part comprises a connecting rod arranged in a channel and a helical blade arranged around the connecting rod, and the connecting rod is in power connection with a power motor.

According to the nucleus pulposus clamp provided by the utility model, the edges of the spiral blades are arranged in a blade shape so as to form the crushing part.

According to the nucleus pulposus pliers provided by the utility model, the arrangement interval of the spiral blade corresponding to the crushing part area is smaller than the arrangement interval of the spiral blade corresponding to the conveying part.

The utility model provides a nucleus pulposus clamp, wherein a conveying part comprises a negative pressure suction device which is arranged at the rear end of a channel and connected with the channel.

The crushing part is a helical blade arranged at the front end of the channel or a blade arranged circumferentially.

The nucleus pulposus clamp provided by the utility model is characterized in that the channel is positioned in the movable clamp body.

The utility model provides a pair of nucleus pulposus pliers, wherein a detachable part is formed on a movable pliers body and comprises a hollow groove arranged at the top of the movable pliers body and a cover plate detachably covered and buckled above the hollow groove.

The end part of the cover plate is provided with a first wedge-shaped area, and the hollow groove is provided with a second wedge-shaped area matched with the first wedge-shaped area.

In the nucleus pulposus clamp provided by the utility model, the first wedge-shaped region is provided with the spherical bulge, and the second wedge-shaped region is provided with the groove matched with the spherical bulge.

The technical scheme of the utility model has the following advantages:

the utility model provides a pair of nucleus pulposus pliers, after the movable pliers and the fixed pliers complete the cutting and thinning of tissues through a crushing part, the separated tissues can enter the channel, more and more tissues gradually enter the channel along with the operation, the temporary storage function of the tissues can be achieved through the channel, and then the tissues are output to the outside of the nucleus pulposus pliers through a conveying part.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the structure of the nucleus pulposus pliers of the utility model;

FIG. 2 is a schematic view of the structure of the channel provided inside the movable jaw body of the nucleus pulposus jaw of FIG. 1;

FIG. 3 is a schematic view of the assembly of the delivery portion of the nucleus pulposus clamp provided in FIG. 1 within a passageway;

FIG. 4 is a schematic view of the configuration of the cover plate in the nucleus pulposus clamp provided in FIG. 1;

FIG. 5 is a schematic view of another embodiment of the pulverizing unit according to the present disclosure;

fig. 6 is a schematic view of another arrangement of the pulverizing unit and the conveying unit provided in the present application.

Reference numerals illustrate:

1-a fixed handle; 2-a movable handle; 3-a movable clamp body; 4-fixing the clamp body; 5-channel; 61-a power motor; 62-helical blades; 63-bevel gear; 7-a negative pressure generating device; 8-cover plate; 81-spherical protrusions; 9-a second wedge; 16-movable clamp; 17-fixed clamp; 20-crushing part.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Example 1

The present embodiment provides a nucleus pulposus clamp, as shown in fig. 1-6, for removing a rotted bone and trimming bone tissue during an operation, for treating an intervertebral disc disease, etc. It should be noted that the size of the core forceps itself provided in this embodiment needs to be adjusted according to the internal structure, and the size of the core forceps provided in this embodiment may be a fraction or several times of the size of the core forceps provided in the prior art, compared with the core forceps having smaller sizes.

The nucleus pulposus pincers that this embodiment provided include:

the fixed handle 1 and the movable handle 2 are hinged with each other, and a spring structure is arranged between the fixed handle 1 and the movable handle 2;

specifically, as shown in fig. 1, the movable handle 2 is disposed at the left side of the fixed handle 1, and during the operation, the thumb of the operator acts on the fixed handle 1, and the index finger or the middle finger acts on the movable handle 2, so as to realize the approaching or separating action of the movable handle 2 relative to the fixed handle 1;

the spring structure can be arranged at the hinge point of the fixed handle 1 and the movable handle 2, and can also be arranged between the movable handle 2 and the fixed handle 1, and the spring structure provides a driving force for the movable handle 2 to move far away from the fixed handle 1.

The movable clamp body 3 is connected with the movable handle 2, and the movable clamp 16 is hinged on the movable clamp body 3; the fixed clamp body 4 is connected with the fixed handle 1, a fixed clamp 17 is arranged on the fixed clamp body 4, and a meshing cavity is formed between the movable clamp 16 and the fixed clamp 17;

specifically, as shown in fig. 1, under the view angle, the movable clamp body 3 is disposed above the fixed clamp body 4, the movable handle 2 drives the movable clamp body to move in the left-right direction in the drawing, the movable clamp body 3 further drives the movable clamp 16 to rotate relative to the fixed clamp 17, and when the movable clamp 16 approaches to the fixed clamp 17, the tissue can be resected. The fixed jaw 17 itself does not move, and the movable jaw 16 rotates clockwise or counterclockwise relative to the fixed jaw 17 from the perspective shown in fig. 1. At the same time, a saw-tooth like structure is provided on both the movable clamp 16 and the fixed clamp 17 to facilitate removal of specific tissue from the interior of the body.

A passage 5 communicating with the bite chamber for accommodating the crushed tissue therein;

in the present embodiment, the installation position of the passage 5 itself is not limited. As one embodiment, a channel 5 is disposed on the movable forceps body 3, the front end of the channel 5 is communicated with the movable forceps 16 and is used for receiving the tissue in the occlusion cavity, and the tail end of the channel 5 extends to the tail of the movable forceps body 3;

specifically, as shown in fig. 2, the channel 5 extends towards the left and right directions, when the movable clamp 16 and the fixed clamp 17 are matched to separate tissues, the separated tissues can enter the channel 5 under the combined action of the movable clamp 16 and the fixed clamp 17, more and more tissues gradually enter the channel 5 along with the operation, and the channel 5 can take in the tissues, so that the nucleus pulposus clamp can be directly taken out of a human body after the tissue is separated every time through the channel 5, the operation efficiency is improved, and the infection risk caused by the fact that the nucleus pulposus clamp enters and exits the human body for many times can be avoided;

a crushing portion for crushing the tissue in the occlusion cavity;

specifically, the crushing part can be a sharp cutting structure, and the crushing part can be driven by applying external power;

the power motor is in transmission connection with the crushing part and is connected with the crushing part;

a delivery portion for delivering tissue into the passageway to a rear portion of the passageway.

In this embodiment, the conveying section itself may be provided on the movable jaw 3 or the fixed jaw 4, as long as the conveying operation of the tissue can be realized. As shown in fig. 1, the conveying section itself is provided on the movable clamp body 3.

As an embodiment, as shown in fig. 2, in this embodiment, in order to ensure that the tissue removed during the operation can continuously enter the channel 5, the delivery portion adopts a negative pressure generating device 7, and is connected to the channel 5 through a suction tube, so as to provide a negative pressure for the channel 5. Specifically, the negative pressure generating device 7 may be a negative pressure pump commonly used in the prior art, after the negative pressure pump is started, it may provide suction for the channel 5, as in the view angle shown in fig. 2, the negative pressure pump may enable the tissue to continuously move from the left side to the right side in the figure, and then be discharged to the outside of the nucleus pulposus forceps under the driving of the negative pressure generating device 7, so that the tissue is continuously introduced into the channel 5 and gradually goes out to the outside of the nucleus pulposus forceps, so that the nucleus pulposus forceps does not need to be separately taken out of the body in the operation process, further the operation efficiency is ensured, and the infection risk of the patient is reduced.

As another embodiment, as shown in fig. 3, the conveying part includes a link disposed in the passage, and a helical blade disposed around the link, the link being in power connection with the power motor. As shown in fig. 3, the spiral blade 62 is disposed along the length direction of the channel 5, and by disposing the spiral blade 62, when the spiral blade rotates, the tissue inside the channel 5 can be pushed to move from left to right in fig. 3, so as to ensure that the tissue is not stacked in the channel 5, further ensure that more tissue continuously enters the channel 5, and further ensure the operation efficiency.

In this case, the pulverizing unit needs to be provided in the passage, and the pulverizing unit may be provided so as to perform the pulverizing operation. When the crushing portion completes crushing of the tissue, the massive tissue is converted into a smaller-sized tissue. The smaller tissue moves further in the channel and gradually to the helical blade position.

As another embodiment, as shown in fig. 6, the spiral blade 62 may be provided with both the functions of the pulverizing section 20 and the conveying section, specifically, a blade structure is formed at the outer edge of the front end of the spiral blade 62 and a conveying section is formed at the rear end of the spiral blade 62. The edges of the helical blades are arranged in a blade shape to form the crushing portion 20. When the helical blade 62 is activated, the tissue entering the interior of the passage 5 is cut and the large pieces of tissue are cut into small pieces, thereby ensuring that the helical blade 62 will smoothly move the tissue toward the tail of the core forceps, i.e., the right side of fig. 2. Meanwhile, the arrangement interval of the spiral blades corresponding to the crushing part areas is smaller than the arrangement interval of the conveying parts, namely the front ends of the spiral blades are more compact, and the rear ends of the spiral blades are relatively loose.

As another implementation mode, the crushing part and the spiral blade are combined, at the moment, the crushing part and the spiral blade adopt the same connecting rod structure, the crushing part is positioned at the front end of the spiral blade, the crushing part can adopt a common cutter head structure in the prior art, and meanwhile, the cutter head and the spiral blade are driven by the same power motor.

Note that, in this embodiment, the pulverizing portion may be provided in a blade structure disposed at a circumferential portion of the outer wall of the link, in addition to the helical blade shape.

Specifically, as shown in fig. 3, the power motor 61 serves as a power source for the rotation of the link itself. The power motor 61 itself may be directly connected to an external power source, or a battery-accommodating area in which a rechargeable battery or a dry battery is prevented may be integrated in the power motor 61;

meanwhile, the power motor can be placed in the channel; as a variant, the power motor 61 itself may be placed outside the tunnel, so as to facilitate the subsequent operations of disassembly and replacement. In addition, in the working process of the power motor 61, stability of the power motor 61 itself needs to be ensured, in this embodiment, a frame body can be arranged between the power motor 61 and the movable clamp body, the frame body is stabilized on the movable clamp body, synchronous movement of the power motor 61 and the movable clamp body can be realized through the frame body, and slipping between the power motor 61 and the connecting rod can be avoided.

Further, as shown in fig. 3, the transmission manner between the connecting rod and the power motor 61 is not limited, and a conventional belt may be used for transmission; in this embodiment, the connecting rod and the power motor 61 are driven by the bevel gear 63, so that the vertical rotation of the output end of the power motor 61 is converted into the horizontal rotation of the connecting rod. Meanwhile, in order to realize that the output end of the power motor 61 can extend into the connecting rod part, a through hole is formed at the top of the movable clamp body 3, and the through hole is used for the input of the output end of the power motor 61. Meanwhile, the power motor itself needs to be fixed through external force in the working process, such as an operator holding the power motor, or a mounting frame body is arranged on the nucleus pulposus clamp, and the power motor is arranged on the frame body, so that the stability of the power motor is improved.

Further, as shown in fig. 4, the movable clamp body 3 is formed with a detachable portion, and the detachable portion includes a hollow groove formed at the top of the movable clamp body 3, and a cover plate 8 detachably fastened over the hollow groove.

Specifically, in this embodiment, the channel 5 may be configured by rotating the movable clamp body, which is inconvenient to clean the inner wall of the channel 5. As a modification, in this embodiment, a detachable portion is formed, and the detachable portion is covered with a cover plate 8, when the hollow groove needs to be cleaned, the cover plate 8 is detached from the hollow groove, at this time, the hollow groove will be opened, an operator can complete the cleaning operation of the hollow groove from above, and at this time, the connecting rod can be taken out from the hollow groove, so as to realize the maintenance, replacement and other operations of the connecting rod. After the above operation is completed, the cover plate 8 is placed over the hollow groove again, thereby completing the closing of the hollow groove so as to facilitate the subsequent operation.

Further, in order to avoid the cover plate 8 moving relative to the hollow groove after assembly, as shown in fig. 2, a first wedge is provided at the end of the cover plate 8, and a second wedge 9 is formed on the hollow groove, which is matched with the first wedge. Under the view angle shown in fig. 2, the first wedge-shaped area and the second wedge-shaped area 9 extend towards the lower left, when the cover plate 8 needs to be assembled, the cover plate 8 is placed into the hollow groove in the direction perpendicular to the plane of fig. 2, and the cover plate 8 can be prevented from shaking by the first wedge-shaped area and the second wedge-shaped area 9.

Further, in order to improve the stability of the cover plate 8 on the hollow groove, as shown in fig. 4, a spherical protrusion 81 is formed on the first wedge-shaped region of the hollow cover plate 8, and the spherical protrusion 81 protrudes from the end of the cover plate 8; meanwhile, grooves matched with the spherical protrusions 81 are formed in the second wedge-shaped areas 9, and after the cover plate 8 is assembled into the hollow groove, the spherical protrusions 81 can enter the grooves, so that the stability of the cover plate 8 in the hollow groove is further improved. Meanwhile, the spherical protrusions 81 themselves may be provided in plurality, and the plurality of spherical protrusions 81 are uniformly provided at the end positions of the cover plate 8.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (10)

1. A nucleus pulposus clamp, comprising:

the fixed handle and the movable handle are hinged with each other;

the movable clamp body is connected with the movable handle, and the movable clamp body is hinged with a movable clamp;

the fixed clamp body is connected with the fixed handle, a fixed clamp is arranged on the fixed clamp body, and a meshing cavity is formed between the movable clamp and the fixed clamp;

a channel in communication with the bite chamber for receiving tissue in the bite chamber;

a crushing portion for crushing the tissue in the occlusion cavity;

the power motor is in transmission connection with the crushing part;

a delivery portion for delivering tissue into the passageway to a rear portion of the passageway.

2. The nucleus pulposus clamp of claim 1 wherein the delivery portion comprises a link disposed in the channel and a helical blade disposed about the link, the link being in powered connection with the power motor.

3. The nucleus pulposus clamp of claim 2, wherein the edges of the helical blades are arranged in a blade shape to form the crushing portion.

4. A pair of nucleus pulposus pliers according to claim 3, wherein the arrangement interval of the spiral blade corresponding to the crushed portion area is smaller than the arrangement interval of the delivery portion.

5. The nucleus pulposus clamp of claim 1 wherein the delivery means comprises a negative pressure suction device disposed at the rear end of the passageway and connected to the passageway.

6. The nucleus pulposus clamp of claim 5, wherein the crushing portion is a helical blade provided at the front end of the passage or a circumferentially arranged blade.

7. The nucleus pulposus clamp of any one of claims 1-6 wherein said passageway is located inside said movable clamp body.

8. The nucleus pulposus clamp of any one of claims 1 to 6, wherein the movable clamp body is formed with a detachable portion, the detachable portion including a hollow groove provided at the top of the movable clamp body, and a cover plate detachably covering the hollow groove.

9. The nucleus pulposus clamp of claim 8 wherein the end of the cover plate is provided with a first wedge and the hollow channel is formed with a second wedge that mates with the first wedge.

10. The nucleus pulposus clamp of claim 9 wherein the first wedge is formed with a bulbous protrusion and the second wedge is formed with a recess that mates with the bulbous protrusion.