CN113198115A - Feeding type esophageal balloon particle sleeve - Google Patents
Feeding type esophageal balloon particle sleeve Download PDFInfo
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- CN113198115A CN113198115A CN202110545190.5A CN202110545190A CN113198115A CN 113198115 A CN113198115 A CN 113198115A CN 202110545190 A CN202110545190 A CN 202110545190A CN 113198115 A CN113198115 A CN 113198115A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
- A61N5/1014—Intracavitary radiation therapy
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
- A61N5/1007—Arrangements or means for the introduction of sources into the body
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
- A61N5/1002—Intraluminal radiation therapy
- A61N2005/1004—Intraluminal radiation therapy having expandable radiation sources
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
- A61N5/1007—Arrangements or means for the introduction of sources into the body
- A61N2005/101—Magazines or cartridges for seeds
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
- A61N2005/1019—Sources therefor
- A61N2005/1024—Seeds
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Abstract
The invention discloses a feeding type esophageal balloon particle sleeve, which comprises a catheter and a particle balloon, wherein the particle balloon comprises an air bag, a plurality of particles and an elastic particle sleeve; the rear end of the conduit comprises a joint and an auxiliary joint, and the auxiliary joint is communicated with the inflation hole through an inflation channel on the side wall of the conduit; the connector is communicated with the feeding hole through an inner hole of the catheter, the particle sleeve is wrapped outside the air bag, and the particles are fixed on the particle sleeve; the particle sleeve is of a shuttle-shaped film structure, the middle part of the surface of the particle sleeve comprises a cylindrical revolution surface or an arc revolution surface, and the two ends of the particle sleeve comprise conical surfaces; the cylindrical revolution surface or the arc revolution surface comprises a plurality of particle loading pipes, and the particles are arranged in the particle loading pipes. The particles of the invention are directly fixed on the particle sleeve, and can not move in the using process, thereby being convenient for carrying out accurate brachytherapy on esophageal cancer patients.
Description
Technical Field
The invention relates to medical equipment, in particular to a feeding type esophageal balloon particle cannula.
Background
Esophageal cancer, also called esophageal cancer, is a malignant tumor that occurs in esophageal epithelial tissue, accounting for 2% of all malignant tumors. The esophagus cancer is divided into early stage, middle stage and late stage, and the common treatment methods comprise operation treatment, chemotherapy treatment and drug treatment. Early esophageal cancer can be classified into occult type (difficult to detect by naked eyes and confirmed under a microscope), erosive type (slight erosive defect of mucosa), plaque type (plaques with different sizes on the mucosal surface and obviously thickened mucosa at the cancerous position), papillary type (tumor is in nodular shape, papillary shape or polyp shape and has clear boundary with surrounding mucosa). Pathological morphotypes of middle and late stage esophageal cancer: it can be divided into medullary type, mushroom type, ulcer type, narrowed type, intracavity type and indeterminate type.
The particle stent and the particle catheter can be used for precise radiotherapy for esophageal cancer, and the most suitable treatment mode for mixed malignant obstruction of esophageal cancer which is rejected or not suitable for implanting the stent is particle catheter radiotherapy. The traditional operation method loads particles into a particle chain and fixes the particle chain with the outer wall of the catheter, so that the accurate radiotherapy on the inner wall of the esophagus is realized, but the traditional particle catheter is found in practical use and has the following defects to be solved:
1. the existing esophageal particle catheter needs to spend a long time to fix particles on the outer wall of the catheter during operation, the particles are arranged at equal intervals in advance, the particles are wound and pasted on the outer wall of the catheter through medical application, the fixing operation is complex, a large amount of time needs to be consumed, the fixing effect is unstable, a particle chain has the risk of slipping, and all accepted extra radiation damages are more during operation. And the outer wall section of the conduit becomes hard after the particles are bound, and is not easy to bend, so that the conduit is inconvenient to enter.
2. The particle monomer is too small, the size is only 4.5x0.8mm, the equal-interval arrangement and arrangement are not easy to carry out, and the particles are easy to slip in the arrangement process, thereby easily causing the arrangement failure.
3. The radiation penetrating power of the particles is 1.7cm, the particles are fixed on the outer wall of the catheter, the outer wall of the catheter cannot be attached to the inner wall of the esophagus, so that a distance between the particles and a focus of the inner wall possibly exists, the radiation penetrating power of the particles is greatly influenced by the distance, and the situation that the radiation dose of the particles is insufficient due to overlarge distance is possibly caused.
The invention with the application number of CN201710445326.9 discloses an air bag particle sleeve system for treating esophageal cancer, a nutrient solution injection connector and a nutrient solution injection channel communicated with the inner hole of a nutrient solution pipe are arranged in the nutrient solution pipe, the outer side end of the nutrient solution injection connector is provided with a nutrient solution injection reinforcing port, the nutrient solution injection connector is connected with a reinforcing connection platform through a rotating platform, the reinforcing connection platform is connected with the nutrient solution pipe, and an air bag particle sleeve device is arranged on the outer wall of the nutrient solution pipe; the balloon particle sleeve device comprises an inner balloon sleeved on the outer wall of the feeding tube, an outer balloon membrane is sleeved on the outer side of the inner balloon, the inner balloon is sleeved on the outer wall of the feeding tube in a sticking mode, and the outer balloon membrane is arranged on the tube wall of the feeding tube on the outer side of the inner balloon in a sticking mode; a radioactive particle limiting pipe is arranged between the outer bag membrane and the inner bag, radioactive particles are filled in the radioactive particle limiting pipe, and the inner bag is connected with an air bag inflation port through an inflation pipeline; the section of the outer cyst membrane is of a wavy annular structure, and the outer side of the outer cyst membrane is provided with a wavy limiting groove. The radioactive particle limiting tube is arranged between the outer bag membrane and the inner bag, the fixing effect is poor, transverse movement is easy to occur, and the wave-shaped limiting groove is difficult to transversely and accurately limit the particle limiting tube.
Disclosure of Invention
The invention aims to provide a feeding type esophageal balloon particle sleeve with good fixing effect of particles in a balloon.
In order to solve the technical problems, the invention adopts the technical scheme that the feeding type esophageal balloon particle cannula comprises a catheter and a particle balloon, wherein the particle balloon comprises an air bag, a plurality of particles and an elastic particle sleeve; the front end of the conduit comprises a plurality of feeding holes, the air bag is tightly sleeved at the front part of the conduit, and the side wall of the front part of the conduit comprises an inflating hole of the air bag; the rear end of the conduit comprises a joint and an auxiliary joint, and the auxiliary joint is communicated with the inflation hole through an inflation channel on the side wall of the conduit; the connector is communicated with the feeding hole through an inner hole of the catheter, the particle sleeve is wrapped outside the air bag, and the particles are fixed on the particle sleeve;
the particle sleeve is of a shuttle-shaped film structure, the middle part of the surface of the particle sleeve comprises a cylindrical revolution surface or an arc revolution surface, and the two ends of the particle sleeve comprise conical surfaces; the cylindrical revolution surface or the arc revolution surface comprises a plurality of particle loading pipes, and the particles are arranged in the particle loading pipes.
In the feeding type esophageal balloon particle cannula, the particle loading tubes are arranged along the axial direction or the oblique direction of the particle sleeve, and the plurality of particle loading tubes are uniformly distributed along the circumferential direction of the particle sleeve; the particle loading tube is partially protruded outwards from the cylindrical revolution surface or the arc revolution surface, the front end and the rear end of the particle loading tube comprise inclined planes, and the inclined plane at the rear end of the particle loading tube comprises a particle filling port.
According to the feeding type esophageal balloon particle cannula, the filling port is a strip-shaped gap longitudinally arranged along the particle loading tube; the particle loading tube is partially projected inwards from the cylindrical revolution surface or the arc revolution surface.
The feeding type esophageal balloon particle sleeve is in a grid shape and comprises a plurality of annular transverse strips and longitudinal strips, the number of the longitudinal strips is the same as that of the particle loading tubes, the particle loading tubes are arranged on the longitudinal strips, and two ends of each longitudinal strip are respectively connected with the small ends of the two conical surfaces; the longitudinal strips are connected by annular transverse strips.
The feeding type esophageal balloon particle cannula comprises a particle sleeve and a lining, wherein the particle sleeve comprises a plurality of particle grooves, and the particle grooves are arranged on the inner surface of the sleeve; the lining comprises a plurality of rows of particle clamping grooves, and each row of particle clamping grooves comprises a plurality of clamping grooves; the lining is sleeved outside the air bag, and the outer sleeve is sleeved outside the lining; the particle clamping grooves are arranged on the outer surface of the lining, the number of the particle clamping grooves is the same as that of the particle grooves, and the particle grooves are buckled on the corresponding particle clamping grooves; the particles are arranged in the card slots of the particle card slot.
In the feeding type esophageal balloon particle cannula, the particle sleeve is in a shuttle shape, the middle parts of the surfaces of the outer sleeve and the lining sleeve respectively comprise cylindrical revolution surfaces or arc revolution surfaces, and the two ends comprise conical surfaces; the particle grooves and the particle clamping grooves are arranged along the axial direction or the oblique direction of the particle sleeve, and the central angle corresponding to the cross sections of the clamping grooves is larger than a semicircle.
The feeding type esophageal balloon particle cannula comprises a plurality of particle balloons which are separately arranged along the axial direction of the catheter, and the side wall of the front part of the catheter comprises the inflation holes corresponding to the particle balloons.
The feeding type esophageal balloon particle sleeve is characterized in that the particle sleeve is wound into a cylinder shape by an elastic application, and the particles are fixed on the inner surface of the application in a matrix manner and clamped between the application and the air bag.
The feeding type esophageal balloon particle cannula comprises the guide wire, the end part of the front end of the catheter comprises a through hole communicated with the inner hole of the catheter, and the guide wire is inserted into the inner hole of the catheter from the joint.
The radioactive particles of the feeding type esophageal balloon particle cannula are directly fixed on the particle sleeve, and the particles cannot transversely move in the using process, so that accurate radiotherapy can be conveniently carried out on esophageal cancer patients.
[ description of the drawings ]
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a perspective view of a feeding type esophageal balloon particle cannula in example 1 of the invention.
Fig. 2 is an exploded view of the front portion of a feeding esophageal balloon particle cannula in accordance with example 1 of the present invention.
Fig. 3 is a perspective view of a particle balloon of example 1 of the present invention.
FIG. 4 is a partial perspective view of a particle cover according to example 1 of the present invention.
FIG. 5 is a partial perspective view of another perspective view of the particle sheath of example 1 of the present invention.
Fig. 6 is a perspective view of the front part of the feeding type esophageal balloon particle cannula in the embodiment 2 of the invention.
Fig. 7 is an exploded view of a particle balloon of example 2 of the present invention.
FIG. 8 is a partial perspective view of a particle cover according to example 2 of the present invention.
Fig. 9 is an exploded view of the front portion of a feeding esophageal balloon particle cannula in accordance with example 3 of the present invention.
Fig. 10 an exploded view of a particle balloon of example 3 of the present invention.
Fig. 11 a cross-sectional structural view of a particle balloon in accordance with example 3 of the present invention.
Fig. 12 is a partial perspective view of a particle balloon of example 3 of the present invention.
Fig. 13 is a partially exploded view of a particle balloon according to example 3 of the present invention.
Fig. 14 is a perspective view of the feeding type esophageal balloon particle cannula in the embodiment 4 of the invention.
Fig. 15 is an exploded view of a particle balloon of example 4 of the present invention.
FIG. 16 is a partial perspective view of a particle cover according to example 4 of the present invention.
FIG. 17 is a partial perspective view of another perspective of a particle sheath according to example 4 of the present invention.
FIG. 18 is a development view of a particle cover according to example 5 of the present invention.
[ detailed description of the invention ]
The feeding type esophageal balloon particle cannula in the embodiment 1 of the invention is shown in fig. 1 to 5 and comprises a catheter 10, a guide wire 02 and a particle balloon 100, wherein the particle balloon 100 is in multi-stage distribution.
The particle balloon 100 includes a balloon 20, several tens of radioactive particles 01, and an elastic particle sheath 30. The particle sleeve 30 is wrapped outside the air bag 20, and the particles 01 are fixed on the particle sleeve 30.
The front and rear ends of the air bag 20 are closely sleeved on the front part of the catheter 10, and the side wall of the air bag installation part at the front part of the catheter 10 is provided with an air bag inflation hole (not shown in the figure). The rear end of the catheter 10 has a connector 11 and a sub-connector 12, and the sub-connector 12 is communicated with the inflation hole of the balloon through an inflation channel on the side wall of the catheter 10. The interior of the airbag 20 can be inflated by the sub-joint 12.
The lateral wall of the front end of the catheter 10 is provided with a plurality of feeding holes 13 which are axially and uniformly staggered, the connector 11 is communicated with the feeding holes 13 through an inner hole of the catheter 10, and a patient uses the particle balloon 100 to block an esophagus in a radiotherapy process, and nutrient solution is infused through the connector 11 and flows out from the feeding holes 13 at the front end to supplement nutrition for the patient. The side of 10 anterior segment pipe walls of pipe is provided with the even interval of axial, and the hole of feeding of two side crisscross distributions can carry out nutrition infusion to the patient, avoids the patient to appear influencing the bad condition because of unable food intake.
The adapter 11 is coaxial with the catheter 10, the end of the front end of the catheter 10 has a through hole 14 communicating with the inner hole of the catheter 10, the guide wire 02 is inserted into the inner hole of the catheter 10 from the adapter 11, and the guide wire 02 can extend from the through hole 14 of the front end of the catheter 10. A guide wire 02 can be introduced from a joint 11 at the rear end of the catheter 10 and extends from the front end to play a role in guiding and delivering.
The particle sleeve 30 is of a shuttle-shaped film structure, the middle part of the surface is a cylindrical (or arc-shaped) revolution surface 31, and the two ends are conical surfaces 32. The cylindrical (or arc-shaped) surface of revolution 31 has 4 particle loading tubes 33, and the particles 01 are loaded in the particle loading tubes 33.
The particle loading tubes 33 are arranged along the axial direction (or oblique direction) of the particle sheath 30, and 4 particle loading tubes 33 are uniformly distributed along the circumferential direction of the particle sheath 30. The particle loading tube 33 projects partly outwardly from the cylindrical surface of revolution 31 and partly inwardly from the inner surface of the cylindrical surface of revolution 31.
The particle loading tube 33 has a slope 331 at each of the front and rear ends thereof, and the slope 331 at the rear end of the particle loading tube 33 has a filling opening 332 for the particles 01, the filling opening 332 being a slit in the shape of a strip arranged along the longitudinal direction of the particle loading tube 33.
The particle sleeve 30 sleeved outside the air bag 20 in a matching mode has elastic stretching and contraction characteristics similar to those of balloon rubber materials, the particle sleeve 30 is entirely shuttle-shaped, and elastic tightening characteristics are arranged at the front end port and the rear end port, so that the particle sleeve can be tightened on catheters at the front end and the rear end of the air bag 20, and axial slippage cannot occur in the process that the particle sleeve 30 is sleeved outside the air bag 20.
The particle loading tube 33 is fixedly arranged on the circumferential mantle of the particle sheath 30, the particle loading tube 33 is in a slender round strip shape, and the particle loading tube 33 is provided with semicircular particle loading tube walls protruding from the inner side and the outer side of the particle sheath 30. The regions at the two ends of the particle loading tube 33 outside the particle sleeve 30 are designed to be slope structures with smaller resistance, so that the particle loading tube 33 can not scratch the inner wall of the esophagus in the process of axial movement of the inner wall of the esophagus of a patient, thereby causing secondary injury to the patient. The inclined plane of the port at the rear side of the particle loading tube 33 is provided with a strip-shaped opening seam, the strip-shaped opening seam is integrally slender, the strip-shaped opening seam can be opened when particles need to be loaded, the particles are loaded into the particle loading tube 33, and after the particles are loaded, the slender structure of the strip-shaped opening seam can ensure that the particles cannot slide out. 4 groups of particle loading tubes 33 are uniformly distributed on the circumference of the circumferential coating film of the particle sleeve 30, and the particle loading tubes 33 are in an axial linear type or spiral type trend. When the air sac 20 is full, the particle sleeve 30 of the elastic film can be propped up, so that the particle sleeve 30 can be profiled according to the filling shape of the air sac 20 after being propped up, and then is attached to the inner wall of the esophagus of a patient for radiotherapy.
The particle saccule 100 adopted by the feeding type esophageal saccule particle cannula in the embodiment 1 of the invention drives the particles to be tightly attached to the inner wall of the esophagus, so that the distance between the particles and a focus area can be shortened as much as possible, the radiation effect can be utilized to the maximum extent, and the sufficient radiation dose can be ensured.
The feeding type oesophagus sacculus particle sleeve pipe disclosed by the embodiment 1 of the invention can realize the pre-loading of particles during an operation, and can quickly attach and fix the completed particle chain structure with the outer wall of the particle sacculus 100, so that the introduction of the oesophagus sacculus particle sleeve pipe can be realized at the first time, the operation time is greatly shortened, the efficiency is greatly improved, and because the particles are pre-loaded during the operation, enough time can be provided for the advance treatment aiming at some emergency situations occurring in the loading process, the temporary distribution of human hands during the operation is not needed, and the safety of a patient is improved.
The particle sleeve 30 of the feeding type esophageal balloon particle sleeve in the embodiment 1 of the invention, which is made of rubber materials similar to balloons, can elastically contract, can be quickly sleeved outside the air bag 20 in an uninflated state of the air bag 20, quickly, uniformly and synchronously complete the relative fixation of particle chains and the balloon particle sleeve, has high efficiency, avoids the waiting time of a patient in the operation process, and reduces the pain of the patient. And the mode that the strip-shaped opening seam at the end of the particle loading pipe 33 loads particles can be compared with the mode that the particles are arranged one by one and are fixed by applying, winding and wrapping, so that the particle chain can be established quickly.
The structure of the feeding type esophageal balloon particle cannula in the embodiment 2 of the invention is shown in fig. 6 to 8, and the difference from the embodiment 1 is only the structure of the particle sleeve 30.
The particle sleeve 30 in embodiment 2 of the present invention is in a grid shape, and includes 4 longitudinal strips 34 and 4 annular transverse strips 35, the particle loading tube 33 is disposed on the longitudinal strips 34, and two ends of the longitudinal strips 34 are respectively connected with the small ends of the two conical surfaces 32. The longitudinal strips 34 are connected by a ring-shaped transverse strip 35.
In the middle particle sleeve 30 of the feeding type esophageal balloon particle sleeve in the embodiment 2 of the invention, the particle sleeve 30 also adopts a shuttle-shaped profile with elastic expansion and contraction characteristics as a whole, the particle sleeve 30 adopts a grid-shaped longitudinal, transverse and vertical crossed sleeve film strip to form an integrated shuttle-shaped profile, the longitudinal direction is a longitudinal strip film 34 in the axial direction, the transverse direction is an annular transverse strip film 35, the particle sleeve 30 adopts a longitudinal, transverse and vertical crossed integrated strip film, and the air bag 20 has no large elastic tightening force, so that the air bag 20 can be inflated without large air pressure. The particle sheath 30 is also provided with a particle loading tube 33 in accordance with example 1, and the particle loading tube 33 is fixed to a longitudinal strip film 34. In embodiment 2 of the present invention, on the basis of ensuring that the particle sheath 30 rapidly and efficiently sheaths the airbag 20, the latticed structure of the strip film can effectively reduce the elastic contraction force, so that the airbag 20 can be inflated without too much gas pressure, the injection thrust of the medical care personnel when inflating the airbag 20 is reduced, the manpower of the medical care personnel is saved, and the situation that the airbag fails to be inflated due to exhaustion of the medical care personnel is avoided.
The structure of the feeding type esophageal balloon particle cannula in the embodiment 3 of the invention is shown in fig. 9 to 13, and the difference from the embodiment 1 is only the structure of the particle sleeve 30.
The particle cover 30 of embodiment 3 of the present invention comprises an outer cover 30A and a liner 30B, wherein the outer cover 30A has 4 particle grooves 36, and the particle grooves 36 are arranged on the inner surface of the outer cover 30A. There are 4 columns of particle card slots on liner 30B, with the particle card slots disposed on the outer surface of liner 30B. There are 10 card slots 37 per column of particle card slots. The sleeve 30B is fitted over the airbag 20, and the outer cover 30A is fitted over the sleeve 30B. The particle slots 36 snap over the corresponding particle card slots. Radioactive seeds 01 are loaded into the seed card slot 37 of the seed card slot.
The outer sleeve 30A and the bush 30B are both of a shuttle-shaped elastic film structure and made of silica gel, the ports at both ends can be elastically contracted and tightly sleeved on the guide tubes 10 at the front end and the rear end of the air bag 20, the middle parts of the surfaces of the outer sleeve 30A and the bush 30B are cylindrical (or arc) revolution surfaces 31, and the two ends are conical surfaces 32. The particle grooves 36 and the particle clamp grooves are arranged along the axial direction (or the oblique spiral shape) of the particle sheath 30.
Example 3 the outer sheath 30A and the lining 30B of the particle cover 30 are respectively provided with the meshes 38, and the mesh structure can increase the elastic expansion and contraction characteristics of the particle cover 30, and as with the particle cover 30 of example 2, serves to reduce the binding force to the airbag 10, so that the airbag 10 can be inflated easily. On the circumference surface of bush 30B, the even angle of circumference is provided with 4 rows of particle fixed slot, and the cross section of draw-in groove 37 exceeds the semicircle, can be with the particle card of crouching inside draw-in groove 37, and draw-in groove 37 cross-section is greater than the semicircle and can be fixed the particle screens, prevents the slippage effect. Each clamping groove 37 is independent, and a certain distance is axially arranged between the front clamping groove 37 and the rear clamping groove 37. An outer sleeve 30A is sleeved outside the bushing 30B, and the outer sleeve 30A plays a role in wrapping and tightening the particles 01 clamped on the upper surface of the bushing 30B to prevent the particles from falling off. The axial length of the outer sleeve 30A is longer than that of the lining 30B, and the axial length of the lining 30B is longer than that of the air bag 10, so that the lining 30B and the two ends of the outer sleeve 30A can be tightly fixed on the outer wall of the catheter 10.
The feeding type esophageal balloon particle cannula in the embodiment 3 of the invention adopts two layers of particle cannulas, the bushing 30B is fixedly clamped between the outer sleeve 30A and the air bag 10, wherein the bushing 30B is used for clamping and fixedly loading the particles 01, the clamping grooves 37 correspond to the particles one by one, and one particle is in a groove to one groove, aiming at the clamping and fixing effects of the clamping grooves 37 when the particles with smaller monomers are put in, the particles can be ensured to be put in, namely clamped and fixed, so that the particles 01 can be quickly and externally supported on the periphery of the bushing 30B, the effect of uniform arrangement is achieved, and a large amount of time is saved. After loading, the outer sheath 30A can be used to cover the package, and compared with the conventional particle loading operation, the loading method of example 3 can greatly improve the success rate and loading speed of particle loading.
Fig. 14 to 17 show the structure of a feeding type esophageal balloon particle cannula in example 4 of the present invention, and the main difference between example 4 and examples 1 to 3 is that the feeding type esophageal balloon particle cannula includes three particle balloons 100, and any structure in examples 1 to 3 can be adopted for the balloons 100.
The three particle balloons 100 of example 4 are arranged apart (in series) in the axial direction of the catheter 10, and the three particle balloons 100 are spaced apart a small distance anteroposteriorly and uniformly anteroposteriorly. The side wall of the front portion of the catheter 10 includes three inflation ports (not shown) corresponding to each particle balloon 100. As shown in fig. 14, the sub-connector 12 communicates with the inflation hole of each balloon through the inflation passage 17 on the side wall of the catheter 10.
The balloon 100 of example 4 may also have a configuration that is not exactly the same as that of examples 1 to 3, and in this example, the balloon 20 has a cylindrical-like shape. The particle sleeve 30 is sleeved outside the air bag 20, the particle sleeve 30 can be made of silica gel, the particle sleeve 30 is of a round sleeve structure, the particle sleeve can be wrapped outside the air bag 20 when the air bag 20 is expanded and inflated, and the air bag 20 expands and fixes the particle sleeve 30. A plurality of particle loading tubes 33 are uniformly distributed around the outer circumference of the particle sheath 30, the particle loading tubes 33 are arranged in the axial direction, and particle bins are provided inside the particle loading tubes 33 to enable loading of particles. The front end surface 331 and the rear end surface 331 of the particle loading tube 33 are both provided with filling ports 332 for particles 01, the filling ports 332 are strip-shaped gaps and have elastic expansion characteristics, the strip-shaped gaps can be expanded when loading is carried out, the filling ports can be retracted after loading is finished, and the filling ports are sealed.
In example 4, the particles 01 can be loaded one by one through the filling port 332, and then the particle sheath 30 loaded with the particles is uniformly wrapped outside the balloon 20, so that the rapid assembly of the particles and the particle balloon 100 can be realized.
In the embodiment 4 of the invention, the multiple groups of serially connected airbags 20 are uniformly distributed in the front and back direction and are matched with the particle sleeve 30 for bundle sleeve assembly, so that the effect of rapidly assembling particles for the balloon particle sleeve in the operation can be achieved, the operation efficiency is greatly improved, and the effective time in the operation process is saved. Meanwhile, a plurality of groups of air bags 20 can be loaded with a plurality of groups of particle sleeves 30, so that the length of a particle chain is effectively ensured, and the sufficient dose of the particle radiation is ensured.
Example 5 of the present invention an unfolded configuration of a particle cover 30 is shown in fig. 18, in which the particle cover 30 is wound in a cylindrical shape by an elastic application 38, and particles 01 are fixed on the inner surface of the application 38 in a matrix manner, and the intervals between adjacent particles 01 between the matrix are all about 5 mm. The size of the application is about 40mm x 40 mm. After the pellet sleeve 30 is wrapped over the airbag 20, the pellets 01 are sandwiched between the applicator 38 and the airbag 20. In the embodiment 5 of the invention, the particles are manually arranged by applying, and the particles are wrapped outside the air bag 20 after being curled, so that the cost is simple, the manufacture is convenient, and the effect of quick loading can be achieved.
Claims (8)
1. A feeding type esophageal balloon particle sleeve comprises a catheter and a particle balloon, wherein the particle balloon comprises an air bag and a plurality of particles; the front end of the conduit comprises a plurality of feeding holes, the air bag is tightly sleeved at the front part of the conduit, and the side wall of the front part of the conduit comprises an inflating hole of the air bag; the rear end of the conduit comprises a joint and an auxiliary joint, and the auxiliary joint is communicated with the inflation hole through an inflation channel on the side wall of the conduit; the connector is communicated with the feeding hole through an inner hole of the catheter, and is characterized by comprising an elastic particle sleeve, wherein the particle sleeve is wrapped outside the air bag, and the particles are fixed on the particle sleeve;
the particle sleeve is of a shuttle-shaped film structure, the middle part of the surface of the particle sleeve comprises a cylindrical revolution surface or an arc revolution surface, and the two ends of the particle sleeve comprise conical surfaces; the cylindrical revolution surface or the arc revolution surface comprises a plurality of particle loading pipes, and the particles are arranged in the particle loading pipes.
2. The feeding type esophageal balloon particle cannula according to claim 1, wherein the particle loading tubes are arranged along the axial direction or the oblique direction of the particle sheath, and a plurality of particle loading tubes are uniformly distributed along the circumferential direction of the particle sheath; the particle loading tube is partially protruded outwards from the cylindrical revolution surface or the arc revolution surface, the front end and the rear end of the particle loading tube comprise inclined planes, and the inclined plane at the rear end of the particle loading tube comprises a particle filling port.
3. The feeding esophageal balloon particle cannula of claim 2, wherein the filling port is a strip-shaped slit arranged longitudinally along the particle loading tube; the particle loading tube is partially projected inwards from the cylindrical revolution surface or the arc revolution surface.
4. The feeding type esophageal balloon particle cannula as claimed in claim 1, wherein the particle sheath is grid-shaped and comprises longitudinal strips and a plurality of annular transverse strips, the number of the longitudinal strips is the same as that of the particle loading tubes, the particle loading tubes are arranged on the longitudinal strips, and two ends of the longitudinal strips are respectively connected with the small ends of the two conical surfaces; the longitudinal strips are connected by annular transverse strips.
5. The feeding esophageal balloon particle cannula of claim 1, wherein the particle cannula comprises an outer sheath and a lining, the outer sheath comprises a plurality of particle slots, and the particle slots are arranged on the inner surface of the outer sheath; the lining comprises a plurality of rows of particle clamping grooves, and each row of particle clamping grooves comprises a plurality of clamping grooves; the lining is sleeved outside the air bag, and the outer sleeve is sleeved outside the lining; the particle clamping grooves are arranged on the outer surface of the lining, the number of the particle clamping grooves is the same as that of the particle grooves, and the particle grooves are buckled on the corresponding particle clamping grooves; the particles are arranged in the card slots of the particle card slot.
6. The feeding type esophageal balloon particle cannula according to claim 5, wherein the particle sleeve is shuttle-shaped, the middle parts of the surfaces of the outer sleeve and the lining sleeve respectively comprise cylindrical revolution surfaces or arc revolution surfaces, and the two ends comprise conical surfaces; the particle grooves and the particle clamping grooves are arranged along the axial direction or the oblique direction of the particle sleeve, and the central angle corresponding to the cross sections of the clamping grooves is larger than a semicircle.
7. The feeding esophageal balloon particle cannula of claim 1, comprising a plurality of particle balloons, the particle balloons are arranged separately along the axial direction of the catheter, and the side wall of the front part of the catheter comprises the inflation holes corresponding to the particle balloons.
8. The feeding esophageal balloon particle cannula of claim 1, comprising a guide wire, wherein the end of the front end of the catheter comprises a through hole communicating with the inner hole of the catheter, and the guide wire is inserted into the inner hole of the catheter from the joint.
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| CN202110545190.5A CN113198115B (en) | 2021-05-19 | 2021-05-19 | Feeding type esophageal balloon particle sleeve |
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| CN202110545190.5A CN113198115B (en) | 2021-05-19 | 2021-05-19 | Feeding type esophageal balloon particle sleeve |
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| CN113198115B (en) | 2023-04-11 |
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