CN114287981B

CN114287981B - Control structure for reducing pipe orifice

Info

Publication number: CN114287981B
Application number: CN202210221379.3A
Authority: CN
Inventors: 王强; 赵磊; 赵亚洲; 姜鹏; 吴东; 吴晰; 杨爱明
Original assignee: Shengyi Technology Beijing Co ltd; Peking Union Medical College Hospital Chinese Academy of Medical Sciences
Current assignee: Shengyi Technology Beijing Co ltd; Peking Union Medical College Hospital Chinese Academy of Medical Sciences
Priority date: 2022-03-09
Filing date: 2022-03-09
Publication date: 2022-06-14
Anticipated expiration: 2042-03-09
Also published as: CN114287981A

Abstract

The invention relates to the technical field of medical equipment, and discloses a control structure for reducing a pipe orifice, which comprises an adjusting belt (20), an adjusting piece and an outer sleeve (30), wherein the first end of the outer sleeve (30) can be jointed with the front end of an endoscope (40), the adjusting belt (20) surrounds a support ring and is supported on the inner circumference of the outer sleeve (30), and the adjusting piece can adjust the diameter of the adjusting belt (20) to change the caliber of the second end of the outer sleeve (30). Through the technical scheme, the adjusting belt is utilized to enclose the synthetic support ring and enable the synthetic support ring to be attached to the outer sleeve, the diameter of the adjusting belt can be changed under the adjustment of the adjusting piece, then the caliber of the outer sleeve is changed therewith, the diameter of the port can be adjusted according to needs by the port of the control structure with the reducing pipe orifice, the control structure with the reducing pipe orifice does not need to be changed according to needs in an adaptation operation, the operation cost is reduced, the operation is convenient, and the operation process is shortened.

Description

Control structure for reducing pipe orifice

Technical Field

The invention relates to the technical field of medical equipment, in particular to a control structure for reducing a pipe orifice.

Background

A transparent cap, namely a medical transparent mucosa suction sleeve belongs to two types of medical instruments and is firstly applied to auxiliary endoscopic mucosal dissection operation in 1992 in Japan. At the transparent cap of digestion scope camera lens front end installation, both can help the fixed of camera lens and the isolation between camera lens and tissue to promote scope field of vision definition down, can attract the focus in the art simultaneously, the focus that conveniently gets into transparent cap is further set by the snare and is got and is amputated by the high frequency electric sword. The novel technology is particularly suitable for flat lesions, and the lesions can be absorbed into a water drop shape by virtue of the transparent cap, so that the operation difficulty is effectively reduced, and the excision efficiency of the lesions and the success rate of the operation are improved. The incidence of digestive tract tumors in the population of China is high, the current strategic guidelines for preventing and treating tumors in China are determined to be 'forward movement of a gateway and downward movement of the center of gravity', and early diagnosis and treatment of the digestive tract tumors become the research focus of relevant scientific research work in China clinical practice.

In recent years, the application range of the transparent cap in clinic is rapidly expanded, from endoscopic mucosal resection, endoscopic submucosal dissection, endoscopic varicose ligation, endoscopic varicose injection, endoscopic retrograde cholangiopancreatography and the like, and many researches are made on the application of the transparent cap in diagnosis and extraction of small foreign bodies in the esophagus under the endoscope, and the transparent cap is applied to colonoscopy and natural orifice surgery. In 2015, the transparent cap assists hardening operation under endoscope, and can be used for treating internal hemorrhoid, rectal mucosa prolapse and other diseases. The transparent cap with the uniform specification is not matched with the focus in a certain degree, and the focus resection error can be caused in the operation.

Disclosure of Invention

The invention aims to solve the problems that the opening diameter of a medical mucosa suction sleeve in the prior art cannot be adjusted and is difficult to adapt to changes in an operation, and provides a control structure for reducing a pipe orifice.

In order to achieve the above object, the present invention provides, in one aspect, a control structure for reducing a diameter of a pipe orifice, comprising an adjustment band, an adjustment member, and an outer sleeve, a first end of the outer sleeve being engageable with a front end of an endoscope, the adjustment band surrounding a support ring and supported on an inner circumference of the outer sleeve, the adjustment member being capable of adjusting a diameter of the adjustment band to change a diameter of a second end of the outer sleeve.

Optionally, both ends of the adjusting belt can partially overlap, the adjusting part includes the adjusting gear that can rotate around its central axis, the adjusting gear is provided with a plurality of teeth along circumference, be provided with on the adjusting belt with the driving medium that the adjusting gear matches, one end of adjusting belt can be for the overcoat is fixed, the other end can be in circumferential movement under the drive of adjusting gear to adjust the diameter.

Optionally, the transmission member is a plurality of through holes arranged at intervals.

Optionally, the control structure of mouth of pipe reducing still include with the skeleton that the regulation band links to each other, the overcoat can the cladding in the skeleton outside, the first end of skeleton can joint in the front end of endoscope, the skeleton have cylindric first state and the second state of the outside expansion of second end of skeleton, the skeleton has the follow the first state to the motion trend that the second state changed, the regulation band can drive the skeleton is in first state and change between the second state, in order to drive the change of overcoat appearance.

Optionally, the frame includes a base, the base being cylindrical and disposed at the first end of the frame.

Optionally, the skeleton still includes connect in a plurality of expansion pieces of base, the expansion piece is followed the circumference interval setting of base, the expansion piece can outwards be buckled to make the expansion piece keep away from the one end of base can outwards move.

Optionally, the expansion piece has a plurality of subsections connected in sequence.

Optionally, a fixing ring is arranged on the expansion piece, and the adjusting band can penetrate through the fixing ring.

Optionally, the adjusting member further includes a torsion wire fixedly connected to the adjusting gear, and the torsion wire is capable of flexibly bending and transmitting a torque so as to drive the adjusting gear to rotate around the central axis.

Optionally, the expansion piece is provided with a fixing frame, and the adjusting gear is rotatably arranged on the fixing frame.

Optionally, the adjusting member further includes a guide wire sleeve, and the guide wire sleeve is sleeved at one end of the torsion guide wire close to the adjusting gear.

Optionally, the control structure for reducing the diameter of the nozzle further comprises a control assembly, the control assembly is arranged at the proximal end of the torsion guide wire, and the control assembly can control the rotation speed and the transmission torque of the torsion guide wire.

Through the technical scheme, the adjusting belt is used for surrounding the synthetic support ring and enabling the support ring to be attached to the outer sleeve, the diameter of the adjusting belt can be changed under the adjustment of the adjusting piece, the caliber of the outer sleeve is changed accordingly, the diameter of the port can be adjusted according to needs by the port of the control structure with the reducing pipe orifice, the medical mucosa suction sleeve does not need to be replaced according to the needs in the operation, the operation cost is reduced, the operation is convenient, and the operation process is shortened.

Drawings

FIG. 1 is an exploded view of the structure of the nozzle diameter-variable control structure according to the present invention;

FIG. 2 is a schematic view of the adjusting ring and adjusting gear of the present invention;

FIG. 3 is a schematic structural view of a second state of the skeletal frame of the present invention;

FIG. 4 is a schematic structural view of a first state of the skeletal frame of the present invention;

FIG. 5 is a schematic view of the structure of one embodiment of the adjusting ring, the frame and the transmission member of the present invention;

fig. 6 is a schematic structural diagram of a nozzle diameter-variable control structure according to the present invention.

Description of the reference numerals

10-framework, 11-base, 12-expansion piece, 13-fixing ring, 14-fixing frame, 20-adjusting belt, 21-through hole, 30-outer sleeve, 40-endoscope, 50-adjusting gear, 60-torsion guide wire and 70-guide wire sleeve.

Detailed Description

The following describes in detail embodiments of the present invention with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are given by way of illustration and explanation only, not limitation.

In the present invention, the use of directional terms such as "upper", "lower", "top", "bottom", "left" and "right" generally means the orientation of the device or apparatus in the use state, unless otherwise specified. It should be noted that this is for convenience of description of the invention only and should not be construed as a limitation of the invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features.

In the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

The invention provides a control structure for reducing a pipe orifice, which comprises an adjusting belt 20, an adjusting piece and an outer sleeve 30, wherein a first end of the outer sleeve 30 can be jointed with the front end of an endoscope 40, the adjusting belt 20 surrounds a support ring and is supported on the inner circumference of the outer sleeve 30, and the adjusting piece can adjust the diameter of the adjusting belt 20 to change the caliber of a second end of the outer sleeve 30.

It should be noted that the "transparent cap", i.e. the medical mucosa suction sleeve, is a disposable surgical consumable, since the size of the lesion varies from person to person, the fit degree of the transparent cap of uniform specification and the lesion is not matched to a certain extent, which may cause the error of the lesion excision in the operation, for example, the inner diameter of the transparent cap is slightly smaller than the lesion area, which may cause the incomplete excision of the lesion, and the inner diameter of the transparent cap is slightly larger than the lesion area, which may easily attract the intrinsic muscle layer of the lesion base, resulting in the injury of the intrinsic muscle layer. Therefore, the corresponding size needs to be selected in real time in the operation according to the diameter of the endoscope and the size of the focus, and the focus is positioned in the body of a patient, so that the selected medical mucosa suction sleeve needs to be replaced when the size is not proper, resource waste is caused to a certain degree, the expense cost and time cost of the operation are increased, and the transparent cap has a unique function in diagnosis and treatment scenes as a machined piece produced in large batch. Then the selection of a proper front transparent cap according to the occurrence part and infiltration degree of the focus and the operation type has important significance on the success of the endoscopic operation. Hereinafter, a medical mucosa suction sleeve will be described as an example of a practical application of the control structure for reducing the diameter of the nozzle, but this case should not be considered as limiting the present application.

In this application, utilize regulation band 20 to enclose synthetic support ring and make it can laminate with overcoat 30, the diameter of regulation band 20 can change under the regulation of regulating part, and then the bore of overcoat 30 changes thereupon, makes the diameter size that the port can be adjusted as required to the port of the control structure of mouth of pipe reducing, from the needs in the adaptation operation, need not to change medical mucosa and inhales the cover, reduces the operation cost, makes things convenient for the operation to go on, shortens the operation process.

The material that uses in this application need accord with the medical instrument standard, overcoat 30 can adopt the preparation of elastic rubber material, thereby can enough have elasticity and take place deformation under the drive of regulation band 20, and then change the bore of the second end of overcoat 30, because medical mucosa inhales the cover and need can laminate and seal up the focus position in the operation, and then make the focus position outwards protruding under the appeal effect, consequently its elastic material makes the control structure of mouth of pipe reducing paste and seal up in the focus position under operation operating personnel's promotion. The caliber of the first end of the outer sleeve 30 can be set slightly smaller than the diameter of the front end of the endoscope 40, and the control structure for reducing the diameter of the pipe orifice can be connected to the front end of the endoscope by utilizing the elastic material of the outer sleeve 30, so that the effect of sealing the connection position can be achieved. In addition the control structure of mouth of pipe reducing in this application also can connect through coupling assembling or connection structure, for example threaded connection, elasticity joint structure etc. as long as can reach sealing connection and connect reliably can. The support ring surrounded by the adjusting belt 20 has certain elasticity and toughness, so that the support ring can overcome the counterforce given by the outer sleeve 30 when the outer sleeve 30 is driven to deform, and can deform under the driving of the adjusting piece. The support ring enclosed by the adjusting belt 20 can be circular or can be designed into an open ring according to special requirements such as the position of a focus according to operation requirements, and the support ring can be attached to and cover the position of the focus and achieve a good sealing effect. The adjusting band 20 is a band-shaped structure and can have a wide width, so that the surrounding support ring can also have a wide width, thereby sufficiently supporting the outer sleeve 30 and preventing the control structure of the reducing pipe orifice from influencing the visual field of the endoscope 40.

As a specific embodiment, as shown in fig. 1 and 2, both ends of the adjusting belt 20 may partially overlap, the adjusting member includes an adjusting gear 50 capable of rotating around a central axis thereof, the adjusting gear 50 is circumferentially provided with a plurality of teeth, the adjusting belt 20 is provided with a transmission member matching with the adjusting gear 50, one end of the adjusting belt 20 is fixed with respect to the outer sleeve 30, and the other end is capable of moving circumferentially under the driving of the adjusting gear 50 to adjust the diameter. The circumference of the support ring enclosed by the adjusting band 20 changes when the diameter of the support ring changes, and the circumference of the support ring needs to change along with the change of the diameter in order to ensure that the support ring can maintain the shape of a circular ring, so that the two ends of the adjusting band 20 can be partially overlapped to achieve the above effect, and the support ring can still maintain the enclosed circular ring structure. The adjusting gear 50 can rotate so as to transmit the driving force to the transmission member matched with the adjusting gear, and then drive one end of the adjusting belt 20 to move circumferentially, and the transmission member can have various embodiments, such as matched teeth, uniformly spaced baffles, grooves or through holes. The driving force for driving the adjusting gear 50 to rotate can be provided by a miniature electric control motor connected with the adjusting gear or a torsion wire extending out of the body and operated by an operator.

Because the control structure of mouth of pipe reducing described in this application need stretch into the human body along with the endoscope, consequently need reduce the volume as far as possible and occupy, provide the volume of bigger field of vision and reduction periphery for endoscope 40. As shown in fig. 2, the transmission member is a plurality of through holes 21 arranged at intervals. The teeth of the adjusting gear 50 can be inserted into the through-hole 21 and moved by rotating to push the side wall of the through-hole 21. The thickness of adjusting band 20 has been reduced to furthest as far as to the setting of through-hole 21, has avoided protruding formula drive structure (like structures such as bellied tooth, baffle) to lead to the thickness increase of adjusting band 20 on the one hand, under the condition of equal atress ability, compares forms such as recess, has avoided the increase of bottom surface structure to the thickness of adjusting band 20 of recess, has also alleviateed the weight of adjusting band 20 simultaneously, makes the structure lighter. However, the through holes may cause the strength and the supporting force of the adjusting belt 20 to be reduced to some extent, and therefore, the grooves may also be used as transmission members, and the bottom surface structure of the grooves can improve the strength and the supporting force of the adjusting belt 20.

Further, as shown in fig. 1 and 3-5, the control structure for reducing the diameter of the nozzle further includes a frame 10 connected to the adjusting belt 20, the outer sleeve 30 can be wrapped outside the frame 10, a first end of the frame 10 can be coupled to a front end of the endoscope 40, the frame 10 has a first cylindrical state and a second state in which a second end of the frame 10 expands outward, the frame 10 has a movement tendency of being changed from the first state to the second state, and the adjusting belt 20 can drive the frame 10 to be changed between the first state and the second state, so as to drive the outer shape of the outer sleeve 30 to change. The framework 10 can provide support for the outer sleeve 30 more fully, and the volumes of the adjusting belt 20 and the driving element can be reduced, so that the driving force for driving the adjusting belt 20 to move is reduced, and the driving force for driving the adjusting gear 50 to rotate is reduced. The frame 10 may be made of spring steel, medical stainless steel, memory metal, or the like, and the frame 10 may have a movement tendency from the first state to the second state because the material itself may have elasticity or may be automatically deformed under a characteristic condition. The cylindrical structure formed in the first state can ensure that the control structure with the diameter-variable pipe orifice not only ensures the visual field of the endoscope 40 connected with the control structure, but also has smaller volume and is convenient to extend into the focus position. After the patient focus position is reached, the framework 10 can be further changed to the second state along with the adjustment of the adjusting belt 20, and support is continuously provided for the deformation of the outer sleeve 30, and the framework 10 which the framework 10 has can have the movement trend of changing from the first state to the second state, so that on one hand, the attaching degree of the framework 10 and the outer sleeve 30 can be ensured, on the other hand, the framework 10 can be changed into different shapes (such as horn shape, vase shape and the like) to adapt to the requirements of the operation, and the outer sleeve 30 can correspondingly change the shapes accordingly.

As a specific embodiment, as shown in fig. 1 and fig. 3 to 5, the frame 10 includes a base 11, and the base 11 is cylindrical and is disposed at a first end of the frame 10. The base 11 can be used as a limit position, the base 11 is attached to the front end face of the endoscope 40 to serve as a mark for installing the control structure with the variable diameter of the pipe orifice, and meanwhile, the base 11 enables the part of the outer sleeve 30 close to the endoscope 40 to have certain support, so that the visual field of the endoscope 40 is prevented from being influenced, and a foundation is also provided for the arrangement of other parts of the framework 10.

In addition, as shown in fig. 3 to 6, the framework 10 further includes a plurality of expansion pieces 12 connected to the base 11, the expansion pieces 12 are arranged at intervals along the circumferential direction of the base 11, and the expansion pieces 12 can be bent outward, so that one end of the expansion piece 12 away from the base 11 can move outward. When the adjusting band 20 drives the second end aperture of the outer sleeve 30 to expand, the limiting force of the adjusting band 20 on the expansion piece 12 is reduced, one end of the expansion piece 12 is fixed on the base 10 and therefore cannot move, and the other end moves outwards and is kept attached to the inner side of the outer sleeve 30, so that the outer sleeve 30 can continuously provide supporting force.

In one embodiment, the expansion piece 12 has a plurality of subsections that are connected in series. When the expansion pieces 12 deform, a certain included angle can be formed between the sub-segments, and the sub-segments can be straight plates or curved surfaces, so that the expansion pieces 12 can have an appearance structure which is consistent with the design after being folded and expanded according to the needs.

In order to facilitate the fixing and the limiting of the adjusting band 20, as shown in fig. 1 to 5, a fixing ring 13 is provided on the expansion piece 12, and the adjusting band 20 can pass through the fixing ring 13. The fixing ring 13 can limit the movement of the adjusting band 20 in the radial direction, and prevent the adjusting band 20 from falling off, and as an embodiment, the fixing end of the adjusting band 20 can be fixed with the fixing ring 13.

As a specific embodiment, as shown in fig. 1 and fig. 2, the adjusting member further includes a torsion wire 60 fixedly connected to the adjusting gear 50, and the torsion wire 60 can flexibly bend and transmit a torque, so as to drive the adjusting gear 50 to rotate around the central axis. The flexibility of the torsion wire 60 allows it to be passed through complex patient structures to the site of a lesion with the endoscope 40. The use of the torsion wire 60 allows the operator to precisely control the contraction and expansion of the control structure of the nozzle reducing diameter by hand feel and visual assistance provided by the endoscope 40.

In addition, as shown in fig. 1 to 5, the expansion piece 12 is provided with a fixing frame 14, and the adjusting gear 50 is rotatably provided on the fixing frame 14. The adjusting gear 50 may have a rotation shaft fixed to both ends thereof, and the fixing frame 14 may have a fixing hole through which the rotation shaft passes and is rotatably disposed in the fixing hole, thereby restricting radial movement of the adjusting gear 50.

In addition, as shown in fig. 1, the adjusting member further includes a guide wire sleeve 70, and the guide wire sleeve 70 is sleeved on one end of the torsion wire 60 close to the adjusting gear 50. The torsion guide wire 60 inevitably generates friction with adjacent human tissues in the operation process, the human tissues in the body are fragile, in order to avoid damage to the human tissues, the guide wire sleeve 70 can be sleeved on the outer side of the torsion guide wire 60, the torsion guide wire 60 can be isolated from the human tissues by the guide wire sleeve 70, the guide wire sleeve 70 can have a smooth surface, the human tissues can be prevented from being damaged even if the guide wire sleeve 70 is in contact with the human tissues, and furthermore, the guide wire sleeve 70 can be made of materials with high flexibility, so that the motion of the torsion guide wire is prevented from being influenced. The guide wire sleeve 70 can also be made of materials with low allergenicity and good biocompatibility, such as silica gel and other materials, so as to prevent patients from causing adverse reactions such as allergy. To enhance the shielding effect of the guidewire cannula 70, the guidewire cannula 70 may extend all the way outside the patient.

As a specific implementation manner, the control structure for reducing the diameter of the orifice further includes a control component, the control component is disposed at the proximal end of the torsion guide wire 60, and the control component can control the rotation speed and the transmission torque of the torsion guide wire 60. Specifically, control assembly can be for the rocker or the electronic gear system of hand formula, and hand formula device can make the operator operate according to feeling, conveniently opens and stops, can effectively avoid the maloperation, and electronic system can simplify operator's operation and reduce operator's physical demands.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including any suitable combination of specific features, and in order to avoid unnecessary repetition, the invention will not be described in detail in relation to the various possible combinations. Such simple modifications and combinations should also be considered as disclosed in the present invention, and all such modifications and combinations are intended to be included within the scope of the present invention.

Claims

1. A control structure for reducing a pipe orifice, which is characterized by comprising an adjusting belt (20), an adjusting piece and an outer sleeve (30), wherein a first end of the outer sleeve (30) can be jointed with the front end of an endoscope (40), the adjusting belt (20) surrounds a support ring and is supported on the inner circumference of the outer sleeve (30), and the adjusting piece can adjust the diameter of the adjusting belt (20) to change the caliber of a second end of the outer sleeve (30);

The control structure of mouth of pipe reducing still include with skeleton (10) that the regulation band links to each other, overcoat (30) can the cladding in skeleton (10) outside, the first end of skeleton (10) can couple in the front end of endoscope (40), skeleton (10) have cylindric first state and the second state of the outside expansion of second end of skeleton (10), skeleton (10) have the follow first state to the motion trend that the second state changed, regulation band (20) can drive skeleton (10) are in first state and change between the second state, in order to drive the change of overcoat (30) appearance.

2. The pipe orifice diameter changing control structure according to claim 1, wherein two ends of the adjusting belt (20) can partially overlap, the adjusting member includes an adjusting gear (50) capable of rotating around a central axis thereof, the adjusting gear (50) is circumferentially provided with a plurality of teeth, a transmission member matched with the adjusting gear (50) is provided on the adjusting belt (20), one end of the adjusting belt (20) can be fixed relative to the outer sleeve (30), and the other end can be driven by the adjusting gear (50) to circumferentially move so as to adjust the diameter.

3. The control structure for reducing the pipe orifice according to claim 2, wherein the transmission member is a plurality of through holes (21) arranged at intervals.

4. The nozzle diameter changing control structure according to claim 2, wherein the framework (10) comprises a base (11), and the base (11) is cylindrical and is arranged at the first end of the framework (10).

5. The pipe orifice diameter changing control structure according to claim 4, wherein the framework (10) further comprises a plurality of expansion pieces (12) connected to the base (11), the expansion pieces (12) are arranged at intervals along the circumferential direction of the base (11), and the expansion pieces (12) can be bent outwards so that one ends of the expansion pieces (12) far away from the base (11) can move outwards.

6. Nozzle diameter variation control structure according to claim 5, characterized in that the expansion sheet (12) has a plurality of subsections connected in sequence.

7. The nozzle diameter changing control structure according to claim 5, wherein a fixing ring (13) is arranged on the expansion piece (12), and the adjusting belt (20) can pass through the fixing ring (13).

8. The nozzle diameter-changing control structure according to claim 2, wherein the adjusting member further comprises a torsion wire (60) fixedly connected to the adjusting gear (50), and the torsion wire (60) can flexibly bend and transmit torque, so as to drive the adjusting gear (50) to rotate around the central axis.

9. The nozzle diameter changing control structure according to claim 5, wherein the expansion piece (12) is provided with a fixing frame (14), and the adjusting gear (50) is rotatably arranged on the fixing frame (14).

10. The nozzle reducer control structure according to claim 8, wherein the adjusting member further includes a guide wire sleeve (70), and the guide wire sleeve (70) is disposed on an end of the torsion wire (60) close to the adjusting gear (50).

11. The control structure for reducing the nozzle of claim 8, further comprising a control component disposed at the proximal end of the torsion wire (60), wherein the control component is capable of controlling the rotation speed and the transmission torque of the torsion wire (60).