Balloon expansion equipment for urinary surgery endoscopic surgery
By setting limiting components in the balloon expansion equipment, the problems of low device placement efficiency and poor balloon morphology adaptability are solved, and more efficient placement and better lesion opening effect are achieved.
Patent Information
- Application Number
- CN202510194371.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2025-05-13
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing balloon expansion devices are inefficient when placed into the patient and the balloon is difficult to adapt to different shapes of lesions, resulting in wear and low surgical efficiency.
By setting up limit components, including sliding sleeves, collars and limit sleeves, the operator can change the shape of the balloon to smoothly pass through the narrow access passage and adjust the inflatable shape to accommodate lesions of different shapes.
It improves the efficiency of the balloon expansion equipment being placed into the patient's body, reduces the wear of the balloon and the access channel, enhances the balloon's opening effect on the lesions, and improves the surgical efficiency.
Smart Images
Figure CN119970118A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of medical devices, and in particular to a balloon expansion device for urological laparoscopic surgery. Background Art
[0002] Urology is a hospital department that mainly diagnoses and treats diseases of the "surgical" part of the urinary system. It mainly treats various urinary diseases. During laparoscopic surgery in urology, doctors need to use scalpel handles, hemostatic forceps, and fingers to separate the original intact soft tissue, which is called blunt separation. Blunt separation is often used for loose connective tissue, including flat muscles, tissue spaces, tumor removal, and stripping of connective tissue or adhesion tissue outside the cyst capsule. In order to better separate the lesion, a balloon expansion device is generally used to expand the lesion.
[0003] At present, the balloon expansion device is generally inserted into the patient's body with the help of the access platform of laparoscopic surgery. A cylindrical access channel is set on the top of the access platform. The air supply tube in the balloon expansion device needs to pass through the access channel to allow the balloon to reach the patient's body smoothly. Since the material of the balloon is generally polyurethane, and the size of the balloon in the uninflated state is larger than the size of the air supply tube of the device, during the process of inserting the balloon expansion device into the patient's body, the balloon is easy to produce a large friction collision with the mouth of the access channel, which makes it difficult for the balloon to pass through the access channel, and the balloon is prone to grinding and leakage during the friction between the balloon and the access channel; furthermore, the shape of the balloon of most existing balloon expansion devices after inflation is fixed, so it is difficult to make corresponding changes to the shape of the balloon according to the shape and position of the lesion in the patient's body, resulting in the need to frequently change the inflation volume and placement position of the balloon during the operation, thereby affecting the efficiency of the operation. Therefore, in order to improve the efficiency of the balloon expansion device inserted into the patient's body and improve the balloon's expansion effect on the lesion, the present invention provides a balloon expansion device for laparoscopic surgery of urology to meet the needs. Summary of the invention
[0004] The technical problem to be solved by the present invention is to provide a balloon expansion device for laparoscopic surgery in urology. By setting a limit component, the operator can change the shape of the balloon with the help of the limit component when placing the device into the patient's body, so that the balloon can smoothly pass through the narrow access channel into the patient's body, reduce the wear between the balloon and the access channel, and improve the efficiency of the balloon expansion device being placed into the patient's body. In addition, the limit component can facilitate the operator to adjust the shape of the balloon after inflation so that the balloon can expand lesions of different shapes, reduce the frequency of the operator adjusting the balloon inflation amount, and improve the efficiency of the operation. The above settings can solve the problems of low efficiency of balloon expansion devices placed in patients and poor effect of balloons in supporting lesion tissue at this stage.
[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A balloon expansion device for laparoscopic surgery in urology comprises an air pipe inserted into an access platform, the top of the access platform is fixedly connected to the access channel, the air pipe is inserted into the access platform through the access channel, an air outlet is opened on the bottom outer wall of the air pipe, a balloon is hung on the bottom end of the air pipe, and a piston rod is slidably connected to the inner wall of the air pipe; a limiting mechanism, the limiting mechanism is used to limit the air pipe, and the limiting mechanism is connected to the air pipe.
[0006] Optionally, the limiting mechanism includes a sliding sleeve slidably connected to the outer wall of the gas pipe, a ring is sleeved on the bottom of the sliding sleeve, and the limiting mechanism also includes a limiting sleeve sleeved on the outer wall of the gas pipe.
[0007] Optionally, an adapting groove is provided on the outer wall of the gas delivery pipe, and a sliding rod having a size matching that of the adapting groove is fixedly connected to the inner wall of the sliding sleeve.
[0008] Optionally, the size of the bottom of the gas pipe is smaller than the size of the middle position and the top, a baffle is fixedly connected to one end of the bottom of the sliding rod, and a plug rod is fixedly connected to the bottom of the baffle, and the size of the baffle is consistent with the size of the middle position and the top of the gas pipe.
[0009] Optionally, the ring is connected to the sliding sleeve through the insertion rod, the bottom of the ring is provided with an inwardly inclined slope, the outer wall of the insertion rod is provided with an arc-shaped curved groove, and the inner wall of the ring is provided with an arc-shaped curved protrusion that matches the contour of the arc-shaped curved groove.
[0010] Optionally, a hook is fixedly connected to one end of the bottom of the air pipe, a hanging ring is fixedly connected inside the balloon, the balloon and the hanging ring are an integrally formed structure, and the balloon and the air pipe are hung together through the hook and the hanging ring.
[0011] Optionally, an inner clip is fixedly connected to the outer wall of the bottom of the limiting sleeve, one end of the inner clip is fixedly connected to an outer clip, a weakening groove is provided at the connecting position between the inner clip and the limiting sleeve, the weakening groove thins the connecting position between the inner clip and the limiting sleeve, there is a gap between the inner clip and the outer clip, and the size of the gap is consistent with the size of the access channel.
[0012] Optionally, a limiting plate is symmetrically installed on the top of the limiting sleeve, a bending portion is provided at the bottom of the limiting plate, the bending portion has an arc-shaped contour protruding outward, and the limiting plate and the limiting sleeve are an integrally formed structure.
[0013] Optionally, a slider corresponding to the position of the limiting plate is symmetrically mounted on the outer wall of the sliding sleeve, the slider is a triangular structure, a plurality of linearly arranged clamping parts are fixedly connected to the limiting plate, and the contour of the clamping parts is adapted to the contour of the slider.
[0014] Optionally, a guide portion is installed on the top of the limiting plate, and the guide portion has a conical profile that expands outward, and a scale is provided on the outer wall of the gas pipe.
[0015] Compared with the prior art, the present invention has at least the following beneficial effects: In the above scheme, by setting a limit component, the operator can change the shape of the balloon with the help of the limit component when placing the device into the patient's body, so that the balloon can smoothly pass through the narrow access channel into the patient's body, reduce the wear between the balloon and the access channel, and improve the efficiency of the balloon expansion device being placed into the patient's body. In addition, the limit component can facilitate the operator to adjust the shape of the balloon after inflation, so that the balloon can expand lesions of different shapes, reduce the frequency of the operator adjusting the balloon inflation amount, and improve the efficiency of the operation.
[0016] By setting the sleeve and the ring, before the balloon is inflated, the operator pulls up the sleeve to allow the insertion rod and the ring to pull the balloon to deform and stretch it. The cross-sectional size of the stretched balloon will become smaller. At this time, when the device is placed into the access channel, the balloon will not produce friction with the access channel. Such a setting can not only improve the efficiency of the device being placed into the patient's body, but also will not cause wear to the balloon. After the balloon is inflated, the operator slides the sleeve to change the distance between the two ends of the balloon, thereby changing the shape of the balloon after inflation. When the distance between the two ends of the balloon becomes smaller, the cross-sectional area of the inflated balloon is larger and the length of the balloon is shorter. When the distance between the two ends of the balloon becomes larger, the cross-sectional area of the inflated balloon is smaller and the length of the balloon is longer. Such a setting allows the operator to switch the shape of the balloon according to the shape and position of the lesion, thereby improving the balloon's expansion effect on the lesion tissue and improving the efficiency of the operation.
[0017] By setting the limiting sleeve, when the operator slides the sleeve to change the distance between the two ends of the balloon, the slider will squeeze the limiting plate and cause the limiting plate to expand and deform outward, and when the slider slides to the position of the clamping part, the clamping part will adapt to the contour of the slider and clamp together, so that the sliding sleeve is limited on the air pipe in one direction, and the operator can automatically fix the sliding sleeve through the limiting effect of the limiting plate on the sliding sleeve. Such a setting eliminates the need for the operator to hold the sliding sleeve with his hands all the time, thereby improving the convenience of the operator. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.
[0019] Figure 1 This is a schematic diagram of the enlarged three-dimensional structure of the balloon expansion device and access platform for laparoscopic surgery in urology; Figure 2 It is a schematic diagram of the enlarged three-dimensional structure of the limit mechanism and the access platform; Figure 3 for Figure 2 A in the middle is an enlarged schematic diagram of the three-dimensional structure; Figure 4 for Figure 2 The enlarged three-dimensional structure diagram at B in the middle; Figure 5 A schematic diagram of the cross-sectional three-dimensional structure of a balloon expansion device for laparoscopic surgery in urology; Figure 6 It is a schematic diagram of the three-dimensional structure of the limiting mechanism when viewed from above; Figure 7 It is a schematic diagram of the enlarged three-dimensional structure of the gas pipe and the collar; Figure 8 It is a schematic diagram of the cross-sectional three-dimensional structure of the gas delivery tube, the collar and the balloon; Fig. 9 It is an enlarged three-dimensional structural diagram of the gas transmission pipe, the limit sleeve and the sliding sleeve; Fig.10 It is a schematic diagram of the enlarged three-dimensional structure of the limit sleeve.
[0020] Reference numerals: 1. Access platform; 101. Access channel; 2. Air delivery pipe; 201. Adapter groove; 202. Air outlet; 203. Hook; 3. Piston rod; 4. Balloon; 401. Hanging ring; 5. Limiting sleeve; 501. Inner clip; 502. Outer clip; 503. Weakened groove; 504. Limiting piece; 505. Bending part; 506. Clamping part; 507. Guide part; 6. Sliding sleeve; 601. Sliding rod; 602. Sliding block; 603. Baffle; 604. Inserting rod; 7. Ring; 701. Inclined surface.
[0021] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION
[0022] The following is a detailed description of a balloon expansion device for laparoscopic surgery of urology provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.
[0023] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).
[0024] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.
[0025] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.
[0026] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.
[0027] like Figure 1 and Figure 2As shown, an embodiment of the present invention provides a balloon expansion device for laparoscopic surgery in urology, comprising an air delivery tube 2 inserted into an access platform 1, the top of the access platform 1 is fixedly connected to an access channel 101, the air delivery tube 2 is inserted into the access platform 1 through the access channel 101, an air outlet 202 is opened on the bottom outer wall of the air delivery tube 2, a balloon 4 is hung on the bottom end of the air delivery tube 2, and a piston rod 3 is slidably connected to the inner wall of the air delivery tube 2; a limiting mechanism, the limiting mechanism is used to limit the air delivery tube 2, the limiting mechanism is connected to the air delivery tube 2, and the balloon 4 expansion device provided by the present application is mainly used In laparoscopic surgery for urology, by setting a limit component, the operator can change the shape of the balloon 4 with the help of the limit component when inserting the device into the patient's body, so that the balloon 4 can smoothly pass through the narrow access channel 101 into the patient's body, reducing the wear between the balloon 4 and the access channel 101, and improving the efficiency of inserting the balloon 4 expansion device into the patient's body. In addition, the limit component can facilitate the operator to adjust the shape of the balloon 4 after inflation, so that the balloon 4 can expand lesions of different shapes, reduce the frequency of the operator adjusting the inflation amount of the balloon 4, and improve the efficiency of the operation.
[0028] As an implementation method in this embodiment, Figures 1 to 8 As shown, the limiting mechanism includes a sliding sleeve 6 slidably connected to the outer wall of the gas pipe 2, a collar 7 is sleeved on the bottom of the sliding sleeve 6, an adapting groove 201 is opened on the outer wall of the gas pipe 2, a sliding rod 601 that matches the size of the adapting groove 201 is fixedly connected to the inner wall of the sliding sleeve 6, the size of the bottom of the gas pipe 2 is smaller than the size of the middle position and the top, a baffle 603 is fixedly connected to one end of the bottom of the sliding rod 601, and a plug 604 is fixedly connected to the bottom of the baffle 603, and the size of the baffle 603 is the same as the size of the middle position and the top of the gas pipe 2 The ring 7 is connected with the sliding sleeve 6 through the insertion rod 604, the bottom of the ring 7 is provided with an inwardly inclined inclined surface 701, the outer wall of the insertion rod 604 is provided with an arc-shaped curved groove, the inner wall of the ring 7 is provided with an arc-shaped curved protrusion that matches the contour of the arc-shaped curved groove, one end of the bottom of the air pipe 2 is fixedly connected with a hook 203, and a hanging ring 401 is fixedly connected inside the balloon 4. The balloon 4 and the hanging ring 401 are an integrated molding structure, and the balloon 4 and the air pipe 2 are hung together through the hook 203 and the hanging ring 401.
[0029] Since the sizes of the slide bar 601 and the adapter groove 201 are consistent, the slide bar 601 and the adapter groove 201 can limit each other, thereby ensuring that the sleeve 6 will not be misplaced on the outer wall of the gas pipe 2 during the sliding process. Since the baffle 603 is fixed at the bottom of the slide bar 601, the operator can change the position of the baffle 603 by sliding the sleeve 6. Since the size of the baffle 603 is consistent with the size of the middle position and the top of the gas pipe 2, the baffle 603 can only slide on the bottom outer wall of the gas pipe 2. When the baffle 603 slides to the middle position of the gas pipe 2, it will be unable to slide due to the blocking restriction of the size of the gas pipe 2. Such a setting limits the sliding range of the baffle 603 by virtue of the difference in the size of the gas pipe 2.
[0030] When it is necessary to fix the balloon 4 on the gas delivery pipe 2, first hang the hanging ring 401 in the balloon 4 on the hook 203 at the bottom end of the gas delivery pipe 2, and then let the end of the balloon 4 away from the hanging ring 401 penetrate and be inserted into the ring 7. Since the bottom of the ring 7 is provided with an inwardly inclined inclined surface 701, when the operator inserts the balloon 4 into the ring 7, the inclined surface 701 at the bottom of the ring 7 can be used for auxiliary guidance. Such a setting can improve the efficiency of the operator in inserting the balloon 4 into the ring 7. After the balloon 4 is inserted, the operator holds the ring 7 and the balloon 4 together and sleeves them on the outer wall of the insertion rod 604. An arc-shaped groove is provided on the outer wall, and an arc-shaped protrusion that matches the contour of the arc-shaped groove is provided on the inner wall of the ring 7. Therefore, when the ring 7 and the insertion rod 604 are plugged together, the adaptation effect of the arc-shaped groove and the arc-shaped protrusion structure can improve the firmness of the insertion rod 604 and the sleeve on the one hand, and the tightness of the fit between the balloon 4 and the sleeve on the other hand, ensuring that the balloon 4 will not leak or fall off after inflation. Fixing the balloon 4 with the help of the ring 7 and the insertion rod 604 is not only efficient but also has a good sealing effect after fixation, and it is also more convenient and efficient for the operator to replace the new balloon 4.
[0031] Furthermore, before the balloon 4 is inflated, the operator first fixes one end of the balloon 4 on the air pipe 2 with the help of the hook 203 and the hanging ring 401, and fixes the other end of the balloon 4 to the bottom end of the sliding sleeve 6 with the help of the ring 7 and the insertion rod 604. The operator pulls up the sliding sleeve 6 to make the baffle 603 contact the middle position of the air pipe 2. At this time, the insertion rod 604 and the ring 7 will pull the balloon 4 to deform and stretch it. The size of the cross-section of the stretched balloon 4 will become smaller. At this time, when the device is inserted into the access channel 101, the balloon 4 will not generate friction with the access channel 101. Such a setting can not only improve the efficiency of the device being inserted into the patient's body, but also will not cause wear to the balloon 4.
[0032] Furthermore, after the balloon 4 is inflated, the operator can change the positions of the insertion rod 604 and the ring 7 by sliding the sleeve 6, thereby achieving the effect of changing the distance between the two ends of the balloon 4. Since the two ends of the balloon 4 are fixed, the expanded shape of the balloon 4 after inflation will also change during the process of changing the distance between the two ends of the balloon 4. When the distance between the two ends of the balloon 4 becomes smaller, the cross-sectional area of the inflated balloon 4 is larger and the length of the balloon 4 is shorter. When the distance between the two ends of the balloon 4 becomes larger, the cross-sectional area of the inflated balloon 4 is smaller and the length of the balloon 4 is longer. This arrangement allows the operator to switch the shape of the balloon 4 according to the shape and position of the lesion, thereby improving the effect of the balloon 4 on the expansion of the tissue at the lesion and improving the efficiency of the operation.
[0033] As an implementation method in this embodiment, Figures 1 to 10 As shown, the limiting mechanism also includes a limiting sleeve 5 sleeved on the outer wall of the gas delivery pipe 2, an inner clip 501 is fixedly connected to the outer wall of the bottom of the limiting sleeve 5, one end of the inner clip 501 is fixedly connected to the outer clip 502, a weakening groove 503 is provided at the connection position between the inner clip 501 and the limiting sleeve 5, and the weakening groove 503 thins the connection position between the inner clip 501 and the limiting sleeve 5, there is a gap between the inner clip 501 and the outer clip 502, and the size of the gap is consistent with the size of the access channel 101, and a limiting sheet 504 is symmetrically installed on the top of the limiting sleeve 5, and the limiting sheet 504 is A bending portion 505 is provided at the bottom, and the bending portion 505 has an outwardly protruding arc-shaped profile. The limiting plate 504 and the limiting sleeve 5 are an integrally formed structure. Slide blocks 602 corresponding to the position of the limiting plate 504 are symmetrically installed on the outer wall of the sliding sleeve 6. The slider 602 is a triangular structure. A plurality of linearly arranged clamping portions 506 are fixedly connected to the limiting plate 504, and the profile of the clamping portion 506 is adapted to the profile of the slider 602. A guide portion 507 is installed on the top of the limiting plate 504, and the guide portion 507 has an outwardly expanding conical profile. A scale is provided on the outer wall of the gas pipe 2.
[0034] In order to further improve the efficiency of the operator in arranging the balloon 4 expansion device, a limiting sleeve 5 is slidably sleeved on the outer wall of the air pipe 2. The size of the limiting sleeve 5 matches the size of the air pipe 2, so the two can be fixed with the help of friction. When the operator does not apply external force to the air pipe 2, the air pipe 2 will be fixed in the limiting sleeve 5 under the action of friction. Since there is a gap between the inner clip 501 and the outer clip 502, and the size of the gap matches the size of the access channel 101, the operator can use the inner clip 501 and the outer clip 502 to clamp the limiting sleeve 5 on the access channel 101 from top to bottom. This fixing method is simple and convenient to operate. When the limiting sleeve 5 is fixed, the air pipe 2 can be fixed on the access channel 101 with the help of the limiting sleeve 5, thereby ensuring that the balloon 4 expansion device has sufficient stability during use and is not prone to detachment and displacement.
[0035] Furthermore, since a weakened groove 503 is provided at the connection position between the inner clip 501 and the limiting sleeve 5, the weakened groove 503 thins the connection position between the inner clip 501 and the limiting sleeve 5. Therefore, when the user bends the air tube 2 to change the direction of the balloon 4, the air tube 2 will drive the limiting sleeve 5 to squeeze the inner clip 501. At this time, the weakened groove 503 between the inner clip 501 and the limiting sleeve 5 will bend and deform, and a reverse elastic force will be generated during the deformation process. When the user stops bending the air tube 2, the air tube 2 will automatically reset under the action of the elastic force. This arrangement allows the operator to change the insertion angle of the air tube 2 by hand, thereby changing the angle of the balloon 4 support device, thereby increasing the support range of the balloon 4 expansion device for the tissue near the lesion and improving the practicability of the device.
[0036] Furthermore, since a bending portion 505 is provided at the bottom of the limiting piece 504, and the bending portion 505 has an outwardly protruding arc-shaped profile, the bottom of the limiting piece 504 can be deformed under the action of the bending portion 505. When the operator bends the limiting piece 504 outward, the bending portion 505 is deformed and causes the limiting piece 504 to expand outward under the bending action of the operator. When the limiting piece 504 stops being bent, the limiting piece 504 automatically resets under the action of the elastic force. Since the profile of the clamping portion 506 is adapted to the profile of the slider 602, when the operator slides the sleeve 6 to change the distance between the two ends of the balloon 4, the slider 602 will squeeze the limiting piece 504 and make the limiting piece 504 expand and deform outward. When the slider 602 slides to the position of the clamping part 506, the clamping part 506 will adapt to the contour of the slider 602 and clamp together. At this time, the limiting piece 504 automatically resets and re-attaches to the outer wall of the air delivery pipe 2 under the action of elasticity. Since the slider 602 has a triangular contour, when the slider 602 and the clamping part 506 are clamped together, the plane of the top of the slider 602 conflicts with the plane of the clamping part 506. At this time, the slider 602 cannot slide upward under the limiting action of the clamping part 506. Therefore, even if the balloon 4 is filled with air, it cannot slide. The sliding sleeve 6 will be driven to slide upwards. Such an arrangement makes the sliding sleeve 6 limited on the gas pipe 2 in one direction. The operator can automatically fix the sliding sleeve 6 through the limiting effect of the limiting piece 504 on the sliding sleeve 6. Such an arrangement makes it unnecessary for the operator to hold the sliding sleeve 6 with his hands all the time, thereby improving the convenience of the operator. Since a plurality of linearly arranged clamping parts 506 are installed on the limiting piece 504, and a scale is provided on the outer wall of the gas pipe 2, the operator can refer to the scale on the gas pipe 2 and slide the sliding sleeve 6 to the clamping part 506 at the corresponding position, thereby improving the efficiency of the operator in adjusting the position of the sliding sleeve 6. When adjusting the sleeve 6 in reverse, the operator bends the limit plate 504 outward to allow it to expand and deform outward. The expanded limit plate 504 will move away from the gas pipe 2. At this time, the limit plate 504 can no longer limit the sleeve 6, and the operator can slide the sleeve 6 in the reverse direction; it is worth mentioning that a guide portion 507 is provided on the top of the limit plate 504, and the guide portion 507 has an outward expanding conical profile. This arrangement allows the operator to slide the sleeve 6 into the limit plate 504 for the first time. The outward expanding conical profile of the guide portion 507 can assist the sleeve 6 to squeeze the limit plate 504 to allow it to expand outward, making it more labor-saving and convenient for the operator.
[0037] The working principle of the technical solution provided by the present invention is as follows: When in use, first put the limiting sleeve 5 on the access channel 101 and fix it. Since there is a gap between the inner clip 501 and the outer clip 502, and the size of the gap matches the size of the access channel 101, the operator can use the inner clip 501 and the outer clip 502 to clamp and fix the limiting sleeve 5 on the access channel 101 from top to bottom. This fixing method is simple and convenient to operate. When the limiting sleeve 5 is fixed, insert the air supply tube 2 into the limiting sleeve 5. Since the size of the limiting sleeve 5 matches the size of the air supply tube 2, the two can be fixed by friction. At the same time, the air supply tube 2 can be fixed to the access channel 101 with the assistance of the limiting sleeve 5, thereby ensuring that the balloon 4 expansion device has sufficient stability during use and is not prone to detachment and displacement.
[0038] After the limiting sleeve 5 and the air pipe 2 are fixed, the balloon 4 is fixed on the air pipe 2. First, the hanging ring 401 in the balloon 4 is hung on the hook 203 at the bottom end of the air pipe 2, and then the end of the balloon 4 away from the hanging ring 401 is inserted into the ring 7. Since the bottom of the ring 7 is provided with an inwardly inclined inclined surface 701, the inclined surface 701 at the bottom of the ring 7 can be used for auxiliary guidance when the operator inserts the balloon 4 into the ring 7. Such a setting can improve the efficiency of the operator in inserting the balloon 4 into the ring 7. After the balloon 4 is inserted, the operator holds the ring 7 and the balloon 4 together and sleeves them on the outer wall of the insertion rod 604. An arc-shaped curved groove is provided on the outer wall of the insertion rod 604, and an arc-shaped curved protrusion that matches the contour of the arc-shaped curved groove is provided on the inner wall of the ring 7. Therefore, when the ring 7 and the insertion rod 604 are plugged together, the adaptation effect of the arc-shaped curved groove and the arc-shaped curved protrusion structure can improve the firmness of the insertion rod 604 and the sleeve on the one hand, and improve the tightness of the fit between the balloon 4 and the sleeve on the other hand, ensuring that the balloon 4 will not leak or fall off after inflation. Fixing the balloon 4 with the help of the ring 7 and the insertion rod 604 is not only efficient but also has a good sealing effect after fixation, and it is also more convenient and efficient for the operator to replace the new balloon 4.
[0039] When the balloon 4 is fixed, the balloon 4 and the air tube 2 are inserted into the patient's body, and the operator pulls up the sliding sleeve 6 to make the baffle 603 contact the middle position of the air tube 2. At this time, the insertion rod 604 and the ring 7 will pull the balloon 4 to deform and stretch it. The cross-sectional size of the stretched balloon 4 will become smaller. At this time, when the device is inserted into the access channel 101, the balloon 4 will not generate friction with the access channel 101. Such a setting can not only improve the efficiency of the device being inserted into the patient's body, but also will not cause wear to the balloon 4; the operator pushes the piston rod 3 inward to make the piston rod 3 squeeze the air in the air tube 2, and the air in the air tube 2 is ejected from the air outlet 202 and inflates the balloon 4. After the balloon 4 is inflated, it can support the tissue near the lesion, making it convenient for the operator to treat the lesion.
[0040] After the balloon 4 is inflated, the operator can change the position of the insertion rod 604 and the ring 7 by sliding the sleeve 6, thereby achieving the effect of changing the distance between the two ends of the balloon 4. Since the two ends of the balloon 4 are fixed, the expanded shape of the balloon 4 after inflation will also change during the process of changing the distance between the two ends of the balloon 4. When the distance between the two ends of the balloon 4 becomes smaller, the cross-sectional area of the inflated balloon 4 is larger and the length of the balloon 4 is shorter. When the distance between the two ends of the balloon 4 becomes larger, the cross-sectional area of the inflated balloon 4 is smaller and the length of the balloon 4 is longer. This arrangement allows the operator to switch the shape of the balloon 4 according to the shape and position of the lesion, thereby improving the effect of the balloon 4 on the expansion of the tissue at the lesion and improving the efficiency of the operation. When the operator slides the sleeve 6 to change the distance between the two ends of the balloon 4, the slider 602 will squeeze the limiting piece 504 and cause the limiting piece 504 to expand and deform outward. When the slider 602 slides to the position of the clamping portion 506, the clamping portion 506 will adapt to the contour of the slider 602 and clamp together. At this time, the limiting plate 504 is automatically reset and re-attached to the outer wall of the air pipe 2 under the action of elasticity. Since the slider 602 has a triangular contour, when the slider 602 and the clamping portion 506 are clamped together, the plane of the top of the slider 602 conflicts with the plane of the clamping portion 506. At this time, under the limiting action of the clamping portion 506, the slider 602 cannot slide upward. Therefore, even if the balloon 4 is filled with air, it will not drive the sleeve 6 to slide upward. This arrangement allows the sleeve 6 to be limited to the air pipe 2 in one direction. The operator can automatically fix the sleeve 6 through the limiting effect of the limiting plate 504 on the sleeve 6. This arrangement eliminates the need for the operator to hold the sleeve 6 with his hands all the time, thereby improving the convenience of the operator.
[0041] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.
[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.
Claims
1. A balloon expansion device for urological laparoscopic surgery, comprising an air delivery tube inserted into an access platform, characterized in that: The top of the access platform is fixedly connected with an access channel, the air delivery pipe is inserted into the access platform through the access channel, an air outlet is opened on the bottom outer wall of the air delivery pipe, a balloon is hung on the bottom end of the air delivery pipe, and a piston rod is slidably connected to the inner wall of the air delivery pipe; A limiting mechanism, wherein the limiting mechanism is used to limit the gas pipe, and the limiting mechanism is connected to the gas pipe.
2. The balloon dilatation device for urological laparoscopic surgery according to claim 1, characterized in that: The limiting mechanism includes a sliding sleeve slidably connected to the outer wall of the gas pipe, a collar is sleeved on the bottom of the sliding sleeve, and the limiting mechanism also includes a limiting sleeve sleeved on the outer wall of the gas pipe.
3. The balloon dilatation device for urological laparoscopic surgery according to claim 2, characterized in that: An adapting groove is provided on the outer wall of the gas delivery pipe, and a sliding rod having a size matching that of the adapting groove is fixedly connected to the inner wall of the sliding sleeve.
4. The balloon dilatation device for urological laparoscopic surgery according to claim 3, characterized in that: The size of the bottom of the gas pipe is smaller than the size of the middle position and the top. A baffle is fixedly connected to one end of the bottom of the sliding rod. A plug rod is fixedly connected to the bottom of the baffle. The size of the baffle matches the size of the middle position and the top of the gas pipe.
5. The balloon dilatation device for laparoscopic urology surgery according to claim 4, characterized in that: The ring is sleeved with the sliding sleeve through the insertion rod, the bottom of the ring is provided with an inwardly inclined slope, the outer wall of the insertion rod is provided with an arc-shaped curved groove, and the inner wall of the ring is provided with an arc-shaped curved protrusion that matches the contour of the arc-shaped curved groove.
6. The balloon dilatation device for laparoscopic urology surgery according to claim 2, characterized in that: A hook is fixedly connected to one end of the bottom of the air pipe, a hanging ring is fixedly connected inside the balloon, the balloon and the hanging ring are an integrally formed structure, and the balloon and the air pipe are hung together through the hook and the hanging ring.
7. The balloon dilatation device for laparoscopic urology surgery according to claim 2, characterized in that: An inner clip is fixedly connected to the outer wall of the bottom of the limiting sleeve, one end of the inner clip is fixedly connected to an outer clip, a weakening groove is provided at the connection position between the inner clip and the limiting sleeve, the weakening groove thins the connection position between the inner clip and the limiting sleeve, there is a gap between the inner clip and the outer clip, and the size of the gap is consistent with the size of the access channel.
8. The balloon dilatation device for laparoscopic urology surgery according to claim 2, characterized in that: A limiting plate is symmetrically mounted on the top of the limiting sleeve, a bending portion is arranged at the bottom of the limiting plate, and the bending portion has an arc-shaped contour protruding outwards, and the limiting plate and the limiting sleeve are an integrally formed structure.
9. The balloon dilatation device for laparoscopic urology surgery according to claim 8, characterized in that: Slide blocks corresponding to the positions of the limiting plates are symmetrically mounted on the outer wall of the sliding sleeve. The slide blocks are triangular structures. A plurality of linearly arranged clamping parts are fixedly connected to the limiting plates. The contours of the clamping parts match the contours of the slide blocks.
10. The balloon dilatation device for laparoscopic urology surgery according to claim 8, characterized in that: A guide portion is installed on the top of the limiting piece, and the guide portion has a conical profile that expands outwards. A scale is arranged on the outer wall of the gas delivery pipe.