CN110179539B - Sealing and positioning device for ablation needle in ablation operation - Google Patents
Sealing and positioning device for ablation needle in ablation operation Download PDFInfo
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- CN110179539B CN110179539B CN201910465116.5A CN201910465116A CN110179539B CN 110179539 B CN110179539 B CN 110179539B CN 201910465116 A CN201910465116 A CN 201910465116A CN 110179539 B CN110179539 B CN 110179539B
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- 238000007789 sealing Methods 0.000 title claims abstract description 156
- 238000002679 ablation Methods 0.000 title claims abstract description 72
- 230000001681 protective effect Effects 0.000 claims abstract description 46
- 238000003780 insertion Methods 0.000 claims abstract description 38
- 230000037431 insertion Effects 0.000 claims abstract description 38
- 238000001125 extrusion Methods 0.000 claims abstract description 29
- 238000005253 cladding Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 239000000741 silica gel Substances 0.000 claims description 9
- 229910002027 silica gel Inorganic materials 0.000 claims description 9
- 210000001503 joint Anatomy 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 5
- 201000003144 pneumothorax Diseases 0.000 abstract description 6
- 230000002685 pulmonary effect Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 4
- 239000011324 bead Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001574 biopsy Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00273—Anchoring means for temporary attachment of a device to tissue
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00273—Anchoring means for temporary attachment of a device to tissue
- A61B2018/00279—Anchoring means for temporary attachment of a device to tissue deployable
- A61B2018/00285—Balloons
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00577—Ablation
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Plasma & Fusion (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Otolaryngology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
Abstract
The invention provides a sealing and positioning device for an ablation needle in an ablation operation, which comprises a positioning and sealing structure arranged at a pipe orifice at the upper end of an outer protective pipe and a protective pipe positioning structure arranged in the middle of the outer protective pipe in a clamping manner; the positioning sealing structure comprises an inner cannula, a sealing cap, an annular air bag and an extrusion cap; the protective tube positioning structure comprises a limiting support plate and a tube wall clamping mechanism; a U-shaped notch is arranged on the limit supporting plate; the pipe wall clamping mechanism is arranged at the center of the limiting support plate and used for clamping and positioning the outer protection pipe embedded in the U-shaped notch. The sealing positioning device is supported on a human body by utilizing a protective tube positioning structure, so that the insertion depth of the outer protective tube is positioned and supported, and the occurrence of movement is prevented; the upper pipe orifice of the outer protective pipe can be sealed by utilizing the positioning sealing structure, the insertion depth of the ablation needle can be positioned, pneumothorax in pulmonary nodule positioning puncture and ablation operation can be effectively prevented, and the positioning accuracy of the radio frequency end part of the ablation needle is ensured.
Description
Technical Field
The invention relates to an auxiliary device for an ablation needle in an ablation operation, in particular to a sealing and positioning device for the ablation needle in the ablation operation.
Background
At present, when the existing ablation needle is used, the ablation needle is directly inserted into the outer protective tube, and the insertion depth of the ablation needle is difficult to position and control; in addition, when the ablation needle is used, the upper end pipe orifice of the outer protective pipe is not sealed, air easily enters the human body from the gap between the ablation needle and the outer protective pipe, and pneumothorax problems are easily caused. Therefore, it is necessary to design a sealing and positioning device for an ablation needle in an ablation operation, which can realize the positioning of the insertion depth of the ablation needle and the sealing of an insertion port, improve the positioning precision of the ablation operation, and effectively avoid the ablation and the puncture biopsy of a pulmonary nodule caused by pneumothorax in the operation.
Summary of the invention
The invention aims at: the sealing and positioning device for the ablation needle in the ablation operation can realize the positioning of the insertion depth of the ablation needle and the sealing of the insertion port, improves the positioning accuracy of the ablation operation, and can also effectively avoid pneumothorax in the positioning puncture of the pulmonary nodule and the ablation operation.
In order to achieve the aim of the invention, the invention provides a sealing and positioning device for an ablation needle in an ablation operation, which comprises a positioning and sealing structure arranged at the pipe orifice at the upper end of an outer protective pipe and a protective pipe positioning structure arranged in the middle of the outer protective pipe in a clamping manner;
the positioning sealing structure comprises an inner cannula, a sealing cap, an annular air bag and an extrusion cap; the lower end of the inner insertion tube is vertically and penetratingly arranged on the top of the round cover of the sealing cap; a circular boss is integrally arranged on the outer wall of the inner cannula and close to the top of the circular cover of the sealing cover cap, and cover cap external threads are arranged on the circumferential outer wall of the circular boss; two limiting ring grooves are arranged on the outer pipe wall of the inner cannula, which is positioned in the sealing cap, and an air bag sealing ring is arranged in each of the two limiting ring grooves; a vent pipe is communicated between the two air bag sealing rings, and an air inlet pipe is arranged on the wall of one air bag sealing ring; the annular air bag is sleeved on the upper end part of the inner cannula, and an air outlet pipe is arranged on the annular air bag and on the bag wall opposite to the circular boss; an air guide hole is communicated in the inner cannula and the round boss, one end of the air guide hole is butted with the air inlet pipe, and the other end of the air guide hole is butted with the air outlet pipe; the center of the top of the round cover of the extrusion cover cap is provided with a cannula penetrating hole, and the upper end of the inner cannula penetrates through the cannula penetrating hole; the extrusion cap screw is screwed on the cap external screw, and the top of the circular cap of the extrusion cap is used for extruding the annular air bag in the extrusion cap; the lower end of the inner cannula is used for being inserted into the upper pipe orifice of the outer protective pipe, and the cylindrical inner wall of the sealing cap is buckled outside the upper pipe orifice of the outer protective pipe; a needle body clamping and positioning mechanism for clamping and positioning the ablation needle is arranged in the inner cannula;
the protective tube positioning structure comprises a limiting support plate and a tube wall clamping mechanism; a U-shaped notch is arranged on the limit supporting plate; the pipe wall clamping mechanism is arranged at the center of the limiting support plate and used for clamping and positioning the outer protection pipe embedded in the U-shaped notch.
Further, the needle body clamping and positioning mechanism comprises a limiting mounting plate, a central disc and an annular sealing film; the limiting mounting plate is fixedly arranged in the inner cannula and is perpendicular to the central axis of the inner cannula; a spherical surface mounting hole is formed in the center of the limiting mounting plate; spherical protrusions are arranged on the circumferential surface of the central disc; the central disc is installed in the spherical installation hole through spherical protrusion spherical hinge; a transverse strip-shaped cavity is arranged in the central disc; two rebound compression springs and two sliding sealing blocks are arranged in the transverse strip-shaped cavity; the two sliding sealing blocks are positioned between the two rebound compression springs, and the end parts of the two rebound compression springs are respectively supported at the two ends of the transverse strip-shaped cavity and are used for pushing the sliding sealing blocks to move towards the middle part of the transverse strip-shaped cavity; the upper edges of the opposite side surfaces of the two sliding sealing blocks are respectively provided with a guide slope; a needle body inserting hole vertically penetrates through the center of the center disc, and the needle body inserting hole vertically penetrates through the middle of the transverse strip-shaped cavity; an upper sealing sleeve and a lower sealing sleeve are respectively arranged at the centers of the upper side surface and the lower side surface of the central disc; the upper sealing sleeve and the lower sealing sleeve are respectively and butt-jointed and installed on the orifices on the upper side and the lower side of the needle body insertion hole; two upper sealing rings are arranged in the upper sealing sleeve; two lower sealing rings are arranged in the lower sealing sleeve; the inner ring edge of the annular sealing film is fixedly arranged on the circumferential edge of the upper side surface of the central disc, and the outer ring edge of the annular sealing film is fixedly arranged on the inner pipe wall of the inner insertion pipe.
Further, two guide grooves are transversely arranged on the upper cavity wall of the transverse strip-shaped cavity; the upper side surface of the sliding sealing block is provided with a guide sliding block embedded into a guide groove at a corresponding position.
Further, mounting notches are formed in the lower side edges of the opposite side faces of the two sliding sealing blocks, and sealing rubber sheets are mounted on the mounting notches on the two sides; the side edges of the two sealing rubber sheets protrude out of the opposite side surfaces of the sliding sealing blocks; when the two sliding sealing blocks are extruded relatively, the opposite edges of the two sealing rubber sheets are clung to each other, and the lower side surfaces of the two sealing rubber sheets are clung to the lower side cavity wall of the transverse strip-shaped cavity for sealing the needle body inserting hole.
Further, a circle of outer sealing ring grooves are arranged on the cylindrical inner wall of the sealing cap; an outer sealing annular air bag is arranged in the outer sealing annular groove; a side air inlet pipe is arranged on the bag wall of the outer sealed annular air bag; an air flow channel communicated with the air guide hole is arranged in the sealing cap; the side air inlet pipe is in butt joint communication with the air flow channel.
Further, the pipe wall clamping mechanism is composed of two clamping units; the clamping unit comprises a clamping pressure spring, a mounting support, a pressing rod, a connecting rod, a clamping sliding seat and an arc-shaped clamping plate; the mounting support is fixedly arranged on the upper side surface of the limit supporting plate, and the middle part of the pressing rod is hinged on the mounting support; two T-shaped sliding grooves extending to the center of the limiting support plate are arranged on the upper side plate surface of the limiting support plate; a T-shaped sliding block is arranged at the bottom of the clamping sliding seat; the clamping sliding seats of the two clamping units are respectively and slidably arranged in the two T-shaped sliding grooves through T-shaped sliding blocks; the arc-shaped clamping plates are arranged on the clamping sliding seat, and the inner cambered surfaces of the arc-shaped clamping plates of the two clamping units are opposite; a hinged mounting groove is arranged on the clamping sliding seat; the upper end of the connecting rod is hinged to the inner side end part of the pressing rod, and the lower end of the connecting rod is hinged to the hinged mounting groove of the corresponding side clamping sliding seat through a hinged shaft; the clamping pressure spring elastic support is arranged between the outer side end part of the pressing rod and the upper side plate surface of the limiting support plate, and the lower end of the clamping pressure spring is fixedly arranged on the upper side plate surface of the limiting support plate through a convex column.
Further, a silica gel pad is arranged on the lower side of the limit supporting plate; a cladding tube is arranged at the center of the silica gel pad; a circle of extrusion convex ring is arranged outside the pipe orifice at the upper end of the cladding pipe; the cladding pipe upwards penetrates through the U-shaped notch; the outer protective tube is inserted in the cladding tube.
Further, the extrusion bead is located between the two arc-shaped clamping plates.
Further, an anti-slip rubber bead is arranged on the inner cambered surface of the arc-shaped clamping plate.
Further, a guide conical surface which is convenient to insert into the pipe orifice at the upper end of the outer protective pipe is arranged on the outer wall of the pipe orifice at the lower end of the inner insertion pipe; the outer wall of the cylinder of the extrusion cap is provided with an anti-slip convex edge.
The beneficial effects of the invention are as follows: the outer protective tube is supported on a human body by utilizing the protective tube positioning structure, so that the insertion depth of the outer protective tube is positioned and supported, and the outer protective tube is prevented from moving during use; the upper pipe orifice of the outer protective pipe can be sealed by utilizing the positioning sealing structure, the insertion depth of the ablation needle can be positioned, pneumothorax can be effectively prevented from occurring in pulmonary nodule positioning puncture and ablation, and the positioning precision of the radio frequency end part of the ablation needle is ensured.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of a positioning seal structure according to the present invention;
FIG. 3 is a schematic cross-sectional view of the needle clamping and positioning mechanism of the present invention;
FIG. 4 is a schematic view of a positioning structure of a protective tube according to the present invention;
fig. 5 is a schematic structural diagram of a silica gel pad according to the present invention.
Detailed Description
The following describes the inventive technical scheme in detail with reference to the accompanying drawings, but the inventive scope of protection is not limited to the embodiments.
Example 1:
as shown in fig. 1-5, the disclosed seal positioning device for an ablation needle in an ablation procedure of the present invention comprises: a positioning sealing structure arranged at the pipe orifice at the upper end of the outer protective pipe 1 and a protective pipe positioning structure arranged in the middle of the outer protective pipe 1 in a clamping manner;
the positioning sealing structure comprises an inner cannula 21, a sealing cap 4, an annular air bag 24 and an extrusion cap 3; the lower end of the inner insertion tube 21 is vertically and penetratingly arranged on the top of the round cover of the sealing cover cap 4; a circular boss 22 is integrally arranged on the outer wall of the inner insertion tube 21 and near the top of the circular cover of the sealing cover cap 4, and a cover cap external thread is arranged on the circumferential outer wall of the circular boss 22; two limiting ring grooves 34 are arranged on the outer pipe wall of the inner cannula 21 positioned in the sealing cap 4, and an air bag sealing ring 33 is arranged in each of the two limiting ring grooves 34; a vent pipe 32 is communicated between the two air bag sealing rings 33, and an air inlet pipe 51 is arranged on the bag wall of one air bag sealing ring 33; the annular air bag 24 is sleeved on the upper end part of the inner cannula 21, and an air outlet pipe 27 is arranged on the annular air bag 24 and on the bag wall opposite to the circular boss 22; an air guide hole 26 is communicated and arranged in the inner insertion tube 21 and the circular boss 22, one end of the air guide hole 26 is in butt joint with the air inlet tube 51, and the other end of the air guide hole 26 is in butt joint with the air outlet tube 27; an insertion tube through hole is arranged in the center of the top of the round cover of the extrusion cover cap 3, and the upper end of the inner insertion tube 21 penetrates through the insertion tube through hole; the extrusion cap 3 is screwed on the external thread of the cap, and the top of the circular cap of the extrusion cap 3 is used for extruding the annular air bag 24 in the extrusion cap 3; the lower end of the inner cannula 21 is used for being inserted into the upper pipe orifice of the outer protecting pipe 1, and the cylindrical inner wall of the sealing cap 4 is buckled outside the upper pipe orifice of the outer protecting pipe 1; a needle body clamping and positioning mechanism for clamping and positioning the ablation needle 2 is arranged in the inner cannula 21;
the protective tube positioning structure comprises a limiting support plate 5 and a tube wall clamping mechanism; a U-shaped notch 16 is arranged on the limit supporting plate 5; the pipe wall clamping mechanism is arranged at the center of the limiting support plate 5 and used for clamping and positioning the outer protection pipe 1 embedded in the U-shaped groove opening 16.
The U-shaped groove 16 can be used for directly installing the protective tube positioning structure from the side after the outer protective tube 1 is inserted, so that the top of the outer protective tube 1 does not need to be downwards installed, and the depth of the outer protective tube inserted into a human body in advance is not influenced; the annular air bag 24 is extruded by screwing the extrusion cap 3, so that the air bag sealing ring 33 is inflated to perform extrusion sealing on the inner wall of the pipe orifice of the outer protection pipe 1, and the tightness of the installation of the positioning sealing structure at the pipe orifice at the upper end of the outer protection pipe is ensured; the circular boss 22 can be used for conveniently arranging the external screw thread of the cap, and the side surface of the circular boss can be matched with the circular cap top of the extrusion cap 3 to extrude the annular air bag 24.
Further, the needle body clamping and positioning mechanism comprises a limit mounting plate 35, a center disc 46 and an annular sealing membrane 40; the limit mounting plate 35 is fixedly mounted inside the inner cannula 21, and the limit mounting plate 35 is perpendicular to the central axis of the inner cannula 21; a spherical mounting hole 37 is arranged at the center of the limit mounting plate 35; a spherical projection 36 is provided on the circumferential surface of the center disk 46; the center disk 46 is spherically hinged in the spherical mounting hole 37 by the spherical protrusion 36; a transverse strip-shaped cavity 41 is provided in the central disc 46; two rebound compression springs 42 and two sliding sealing blocks 43 are arranged in the transverse strip-shaped cavity 41; the two sliding sealing blocks 43 are positioned between the two rebound compression springs 42, and the end parts of the two rebound compression springs 42 are respectively supported at the two ends of the transverse strip-shaped cavity 41 and are used for pushing the sliding sealing blocks 43 to move towards the middle part of the transverse strip-shaped cavity 41; a guide slope 47 is provided at the upper edge of the opposite side of the two sliding sealing blocks 43; a needle body inserting hole vertically penetrates through the center of the center disc 46, and vertically penetrates through the middle of the transverse strip-shaped cavity 41; an upper seal sleeve 38 and a lower seal sleeve 48 are provided at the centers of the upper and lower sides of the center disk 46, respectively; the upper sealing sleeve 38 and the lower sealing sleeve 48 are respectively and butt-jointed and installed on the openings on the upper side and the lower side of the needle body insertion hole; two upper sealing rings 39 are installed in the upper sealing sleeve 38; two lower seal rings 49 are installed in the lower seal sleeve 48; the inner circumferential edge of the annular sealing membrane 40 is fixedly arranged on the upper circumferential edge of the central disk 46, and the outer circumferential edge of the annular sealing membrane 40 is fixedly arranged on the inner tube wall of the inner cannula 21. The two rebound compression springs 42 are utilized to push the two sliding sealing blocks 43 to move towards the middle, so that the two sliding sealing blocks are clamped and positioned when the ablation needle 2 is inserted, the insertion depth of the ablation needle 2 is accurately positioned, and the movement is prevented when the ablation needle is used; the two upper sealing rings 39 in the upper sealing sleeve 38 and the two lower sealing rings 49 in the lower sealing sleeve 48 can be used for realizing sealing when the ablation needle 2 is inserted, sealing can be realized under the action of the two sliding sealing blocks 43 when the ablation needle 2 is pulled out, and when the ablation needle 2 is pulled out, the two sliding sealing blocks 43 are pushed by the two rebound compression springs 42 to quickly combine sealing, and then the two sliding sealing blocks are separated from the sealing of the two upper sealing rings 39, so that a certain time interval exists in time to ensure that the ablation needle 2 is always in a sealed state; the spherical protrusion 63 is utilized to be in spherical hinge connection with the spherical mounting hole 37, so that the installation of the central disc 46 can be realized, the central disc 46 is prevented from being separated when the ablation needle 2 is inserted or pulled out, and the insertion angle can be properly adjusted after the ablation needle 2 is inserted, thereby being convenient for properly adjusting the angle of the radio frequency end part of the ablation needle 2 in the process of ablation and meeting the requirement of on-site proper adjustment; sealing of the spherical hinge mounting can be achieved with an annular sealing membrane 40.
Further, two guide grooves 50 are provided transversely on the upper side cavity wall of the transverse strip-shaped cavity 41; a guide slider 44 is provided on the upper side of the sliding seal 43 to be fitted into the guide groove 50 at the corresponding position. The lateral displacement of the sliding sealing blocks 43 can be limited by utilizing the matching of the guide grooves 50 and the guide sliding blocks 44, so that the displacement of the sliding sealing blocks 43 at two sides is prevented from exceeding the range, and the influence on the sealing of the needle body inserting holes at the lower side is avoided.
Further, mounting notches are formed at the lower side edges of the opposite sides of the two sliding seal blocks 43, and a sealing rubber sheet 45 is mounted on the mounting notches at both sides; the side edges of the two sealing rubber sheets 45 slightly protrude out of the opposite side surfaces of the sliding sealing block 43; when the two sliding sealing blocks 43 are oppositely extruded, the opposite edges of the two sealing rubber sheets 45 are clung, and the lower side surfaces of the two sealing rubber sheets 45 are clung to the lower side cavity wall of the transverse strip-shaped cavity 41 for sealing the needle body inserting hole. The sealing rubber sheet 45 can enhance the sealing performance of the needle body insertion hole and can also have the clamping and anti-skid effects when the ablation needle 2 is inserted.
Further, a ring of outer seal ring grooves 29 are provided on the cylindrical inner wall of the seal cap 4; an outer seal ring airbag 31 is installed in the outer seal ring groove 29; a side air inlet pipe 30 is arranged on the bag wall of the outer sealing annular air bag 31; an air flow channel 28 communicated with the air guide hole 26 is arranged in the sealing cap 4; the side inlet duct 30 is in abutting communication with the airflow passage 28. The inflation extrusion of the outer sealing annular air bag 31 can be matched with the two inner air bag sealing rings 33 to realize the inner and outer clamping of the upper pipe orifice of the outer protection pipe 1, so that the stability of the sealing cap 4 after installation can be ensured while the sealing performance is further enhanced, and the outer protection pipe is prevented from being easily separated from the upper pipe orifice of the outer protection pipe 1.
Further, the pipe wall clamping mechanism is composed of two clamping units; the clamping unit comprises a clamping pressure spring 15, a mounting support 7, a pressing rod 8, a connecting rod 18, a clamping sliding seat 9 and an arc-shaped clamping plate 10; the mounting support 7 is fixedly arranged on the upper side surface of the limit supporting plate 5, and the middle part of the pressing rod 8 is hinged on the mounting support 7; two T-shaped sliding grooves 12 extending towards the center of the limit supporting plate 5 are arranged on the upper side surface of the limit supporting plate 5; a T-shaped sliding block 13 is arranged at the bottom of the clamping sliding seat 9; the clamping sliding seats 9 of the two clamping units are respectively and slidably arranged in the two T-shaped sliding grooves 12 through T-shaped sliding blocks 13; the arc-shaped clamping plates 10 are arranged on the clamping sliding seat 9, and the inner cambered surfaces of the arc-shaped clamping plates 10 of the two clamping units are opposite; a hinged mounting groove 17 is arranged on the clamping sliding seat 9; the upper end of the connecting rod 18 is hinged on the inner side end part of the pressing rod 8, and the lower end of the connecting rod 18 is hinged in a hinged mounting groove 17 of the corresponding side clamping sliding seat 9 through a hinged shaft; the clamping pressure spring 15 is elastically supported and installed between the outer end part of the pressing rod 8 and the upper side plate surface of the limiting support plate 5, and the lower end of the clamping pressure spring 15 is fixedly installed on the upper side plate surface of the limiting support plate 5 through the convex column 14. The two arc-shaped clamping plates 10 can be always pushed to be clamped relatively by the two clamping pressure springs 15, so that stable clamping of the outer protective tube 1 is kept during use, the outer protective tube 1 is prevented from moving, and the ablation needle 2 inserted into the outer protective tube 1 is further ensured to have good positioning accuracy.
Further, a silica gel pad 6 is arranged on the lower side of the limit supporting plate 5; a cladding tube 19 is arranged at the center of the silica gel pad 6; a circle of extrusion convex ring 20 is arranged outside the pipe orifice at the upper end of the cladding pipe 19; the cladding tube 19 passes upwardly through the U-shaped notch 16; the outer sheath 1 is inserted into the cladding tube 19. Before the pipe wall clamping mechanism is not installed, the silica gel pad 6 and the outer protection pipe 1 are firstly installed, so that the outer protection pipe 1 is inserted into the cladding pipe 19 for temporary positioning, the outer wall of the outer protection pipe 1 can be wrapped by the cladding pipe 19, and certain anti-skid and sealing performances are achieved.
Further, the pressing bead 20 is located between the two arc-shaped clamping plates 10. The two arc clamping plates 10 can be extruded by utilizing the action of the extrusion convex ring 20 when being clamped relatively, so that the sealing between the cladding pipe 19 and the outer wall of the outer protection pipe 1 is realized, and the sealing performance can be realized at the position where the outer protection pipe 1 is inserted into the human body due to the fitting performance of the silica gel pad 6 and the human body.
Further, an anti-slip rubber rib 11 is provided on the inner arc surface of the arc-shaped grip plate 10. The anti-slip rubber ribs 11 can play a role in anti-slip when contacting with the outer wall of the outer protection tube 1, so that the clamped outer protection tube 1 is ensured not to easily move up and down.
Further, a guiding conical surface 23 which is convenient to insert into the pipe orifice at the upper end of the outer protective pipe 1 is arranged on the outer wall of the pipe orifice at the lower end of the inner insertion pipe 21; an anti-slip rib 25 is provided on the outer wall of the cylinder of the extrusion cap 3. The use of the anti-slip ribs 25 can facilitate the rotational pressing operation of the pressing cap 3; the guiding conical surface 23 can play a role in guiding when the inner cannula 21 is inserted into the pipe orifice at the upper end of the outer protecting pipe 1, so that the lower end of the inner cannula 21 can be quickly and accurately inserted into the outer protecting pipe 1.
When the sealing positioning device for the ablation needle in the ablation operation is used, the positioning structure of the outer protective tube is used for supporting the human body, so that the insertion depth of the outer protective tube 1 is positioned and supported, and the outer protective tube 1 is prevented from moving during the use; the upper pipe orifice of the outer protective pipe 1 can be sealed by utilizing the positioning sealing structure, the insertion depth of the ablation needle can be positioned, pneumothorax can be effectively prevented from occurring in pulmonary nodule positioning puncture and ablation, and the positioning precision of the radio frequency end part of the ablation needle 2 is ensured.
As described above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limiting the invention itself. Various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A sealed positioning device for an ablation needle in an ablation procedure, characterized in that: comprises a positioning sealing structure arranged at the pipe orifice at the upper end of an outer protective pipe (1) and a protective pipe positioning structure arranged in the middle of the outer protective pipe (1) in a clamping manner;
the positioning sealing structure comprises an inner cannula (21), a sealing cap (4), an annular air bag (24) and an extrusion cap (3); the lower end of the inner insertion tube (21) is vertically and penetratingly arranged on the top of the round cover of the sealing cap (4); a circular boss (22) is integrally arranged on the outer wall of the inner insertion tube (21) and close to the top of the circular cover of the sealing cover cap (4), and cover cap external threads are arranged on the circumferential outer wall of the circular boss (22); two rings of limiting ring grooves (34) are arranged on the outer pipe wall of the inner insertion pipe (21) positioned in the sealing cap (4), and an air bag sealing ring (33) is arranged in each of the two limiting ring grooves (34); a vent pipe (32) is communicated between the two air bag sealing rings (33), and an air inlet pipe (51) is arranged on the bag wall of one air bag sealing ring (33); the annular air bag (24) is sleeved on the upper end part of the inner cannula (21), and an air outlet pipe (27) is arranged on the annular air bag (24) and on the bag wall opposite to the circular boss (22); an air guide hole (26) is communicated in the inner insertion pipe (21) and the round boss (22), one end of the air guide hole (26) is in butt joint with the air inlet pipe (51), and the other end of the air guide hole (26) is in butt joint with the air outlet pipe (27); an insertion tube through hole is formed in the center of the top of the round cover of the extrusion cover cap (3), and the upper end of the insertion tube (21) penetrates through the insertion tube through hole; the extrusion cap (3) is screwed on the external thread of the cap, and the top of the circular cap of the extrusion cap (3) is used for extruding an annular air bag (24) in the extrusion cap (3); the lower end of the inner cannula (21) is used for being inserted into the upper pipe orifice of the outer protecting pipe (1), and the cylindrical inner wall of the sealing cap (4) is buckled outside the upper pipe orifice of the outer protecting pipe (1); a needle body clamping and positioning mechanism for clamping and positioning the ablation needle (2) is arranged in the inner cannula (21);
the protective tube positioning structure comprises a limiting support plate (5) and a tube wall clamping mechanism; a U-shaped notch (16) is arranged on the limit supporting plate (5); the pipe wall clamping mechanism is arranged at the center of the limiting support plate (5) and used for clamping and positioning the outer protection pipe (1) embedded in the U-shaped groove opening (16);
the needle body clamping and positioning mechanism comprises a limit mounting plate (35), a central disc (46) and an annular sealing membrane (40); the limiting mounting plate (35) is fixedly arranged in the inner insertion tube (21), and the limiting mounting plate (35) is perpendicular to the central axis of the inner insertion tube (21); a spherical surface mounting hole (37) is arranged at the center of the limit mounting plate (35); a spherical protrusion (36) is arranged on the circumferential surface of the central disk (46); the center disc (46) is spherically hinged in the spherical mounting hole (37) through the spherical bulge (36); a transverse strip-shaped cavity (41) is arranged in the central disc (46); two rebound compression springs (42) and two sliding sealing blocks (43) are arranged in the transverse strip-shaped cavity (41); the two sliding sealing blocks (43) are positioned between the two rebound pressure springs (42), and the end parts of the two rebound pressure springs (42) are respectively supported at the two ends of the transverse strip-shaped cavity (41) and are used for pushing the sliding sealing blocks (43) to move towards the middle part of the transverse strip-shaped cavity (41); a guide slope (47) is arranged at the upper edge of the opposite side surfaces of the two sliding sealing blocks (43); a needle body inserting hole vertically penetrates through the center of the center disc (46), and the needle body inserting hole vertically penetrates through the middle of the transverse strip-shaped cavity (41); an upper sealing sleeve (38) and a lower sealing sleeve (48) are respectively arranged at the centers of the upper side surface and the lower side surface of the central disc (46); the upper sealing sleeve (38) and the lower sealing sleeve (48) are respectively and butt-jointed and installed on the orifices on the upper side and the lower side of the needle body insertion hole; two upper sealing rings (39) are arranged in the upper sealing sleeve (38); two lower sealing rings (49) are arranged in the lower sealing sleeve (48); the inner annular edge of the annular sealing film (40) is fixedly arranged on the circumferential edge of the upper side surface of the central disc (46), and the outer annular edge of the annular sealing film (40) is fixedly arranged on the inner pipe wall of the inner insertion pipe (21);
mounting notches are formed in the lower side edges of the opposite side faces of the two sliding sealing blocks (43), and sealing rubber sheets (45) are mounted on the mounting notches on the two sides; the side edges of the two sealing rubber sheets (45) are protruded out of the opposite side surfaces of the sliding sealing blocks (43); when the two sliding sealing blocks (43) are extruded relatively, the opposite edges of the two sealing rubber sheets (45) are clung, and the lower side surfaces of the two sealing rubber sheets (45) are clung to the lower side cavity wall of the transverse strip-shaped cavity (41) for sealing the needle body inserting hole.
2. The seal positioning device for an ablation needle in an ablation procedure as set forth in claim 1, wherein: two guide grooves (50) are transversely arranged on the upper cavity wall of the transverse strip-shaped cavity (41); the upper side surface of the sliding sealing block (43) is provided with a guide sliding block (44) which is embedded into a guide groove (50) at a corresponding position.
3. The seal positioning device for an ablation needle in an ablation procedure as set forth in claim 1, wherein: a circle of outer sealing ring grooves (29) are arranged on the cylindrical inner wall of the sealing cap (4); an outer sealing annular air bag (31) is arranged in the outer sealing annular groove (29); a side air inlet pipe (30) is arranged on the wall of the outer sealed annular air bag (31); an air flow channel (28) communicated with the air guide hole (26) is arranged in the sealing cap (4); the side air inlet pipe (30) is communicated with the air flow channel (28) in a butt joint way.
4. The seal positioning device for an ablation needle in an ablation procedure as set forth in claim 1, wherein: the pipe wall clamping mechanism consists of two clamping units; the clamping unit comprises a clamping pressure spring (15), a mounting support (7), a pressing rod (8), a connecting rod (18), a clamping sliding seat (9) and an arc-shaped clamping plate (10); the mounting support (7) is fixedly arranged on the upper side surface of the limiting support plate (5), and the middle part of the pressing rod (8) is hinged on the mounting support (7); two T-shaped sliding grooves (12) extending towards the center of the limiting support plate (5) are arranged on the upper side plate surface of the limiting support plate (5); a T-shaped sliding block (13) is arranged at the bottom of the clamping sliding seat (9); the clamping sliding seats (9) of the two clamping units are respectively and slidably arranged in the two T-shaped sliding grooves (12) through T-shaped sliding blocks (13); the arc-shaped clamping plates (10) are arranged on the clamping sliding seat (9), and the inner cambered surfaces of the arc-shaped clamping plates (10) of the two clamping units are opposite; a hinged mounting groove (17) is arranged on the clamping sliding seat (9); the upper end of the connecting rod (18) is hinged on the inner side end part of the pressing rod (8), and the lower end of the connecting rod (18) is hinged in a hinged mounting groove (17) of the corresponding side clamping sliding seat (9) through a hinged shaft; the clamping pressure spring (15) is elastically supported and installed between the outer side end part of the pressing rod (8) and the upper side plate surface of the limiting support plate (5), and the lower end of the clamping pressure spring (15) is fixedly installed on the upper side plate surface of the limiting support plate (5) through the convex column (14).
5. The seal positioning device for an ablation needle in an ablation procedure as set forth in claim 4, wherein: a silica gel pad (6) is arranged at the lower side of the limit supporting plate (5); a cladding pipe (19) is arranged at the center of the silica gel pad (6); a circle of extrusion convex ring (20) is arranged outside the pipe orifice at the upper end of the cladding pipe (19); the cladding pipe (19) upwards penetrates through the U-shaped notch (16); the outer protective tube (1) is inserted in the cladding tube (19).
6. The seal positioning device for an ablation needle in an ablation procedure as set forth in claim 4, wherein: the extrusion convex ring (20) is positioned between the two arc-shaped clamping plates (10).
7. The seal positioning device for an ablation needle in an ablation procedure as set forth in claim 4, wherein: an anti-slip rubber convex edge (11) is arranged on the inner cambered surface of the arc-shaped clamping plate (10).
8. The seal positioning device for an ablation needle in an ablation procedure as set forth in claim 1, wherein: a guiding conical surface (23) which is convenient to insert into the pipe orifice at the upper end of the outer protective pipe (1) is arranged on the outer wall of the pipe orifice at the lower end of the inner insertion pipe (21); the outer wall of the cylinder of the extrusion cap (3) is provided with an anti-slip convex rib (25).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910465116.5A CN110179539B (en) | 2019-05-30 | 2019-05-30 | Sealing and positioning device for ablation needle in ablation operation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910465116.5A CN110179539B (en) | 2019-05-30 | 2019-05-30 | Sealing and positioning device for ablation needle in ablation operation |
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| Publication Number | Publication Date |
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| CN110179539A CN110179539A (en) | 2019-08-30 |
| CN110179539B true CN110179539B (en) | 2024-03-01 |
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| US10499980B2 (en) * | 2013-03-14 | 2019-12-10 | Spiration, Inc. | Flexible RF ablation needle |
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| WO2016074344A1 (en) * | 2014-11-11 | 2016-05-19 | 南京维京九洲医疗器械研发中心 | Manufacturing method for non-magnetic water-cooled microwave ablation needle |
| CN105640642A (en) * | 2016-04-07 | 2016-06-08 | 上海导向医疗系统有限公司 | Internal-cooling microwave ablation needle provided with implanted balloon |
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| CN110179539A (en) | 2019-08-30 |
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