Safety aid before a kind of chemotherapyTechnical field
The invention belongs to medical equipment technical fields, and in particular to safety aid before a kind of chemotherapy.
Background technique
The abdominal cavities such as colorectal cancer, oophoroma cancer is postoperative, and cancer cell is in the major reason that intraabdominal metastasis is treatment failure.CauseThis, how to prevent cancer cell intraabdominal metastasis naturally just becomes the topic that people are concerned about.
Intraperitoneal chemotherapy is exactly a kind of method for being directed to intraperitoneal cancer metastasis and proposing.So-called intraperitoneal chemotherapy, being exactly willAfter chemotherapeutics configures as requested in vitro, drug order is directly injected into abdominal cavity before the deadline, makes drugIt is directly acted on intraperitoneal remaining cancer cell, and then kills cancer cell.Studies have shown that intra-abdominal chemotherapy can be in intraperitoneal generation200-400 times high compared with intravenously administrable of concentration, and chemotherapeutics is back to portal vein, lymphatic vessel to liver by peritonaeum absorption, producesIt is raw that comparable concentration is administered with portal vein, be conducive to subtract the abdominal cavity micro metastasis that goes out, to improve curative effect.Foreign scholar reports abdominal cavityChemotherapy can be substantially reduced the formation probability of intraabdominal metastasis stove.
But the key for improving intraperitoneal chemotherapy success rate is to improve the accuracy of injection, and since drug has centainlyRadioactivity should avoid as far as possible the contact of drug with nonstandard position in injection process, in order to avoid normal cell is caused to damage.
In consideration of it, applicant devises safety aid before a kind of chemotherapy, can assist more accurately implementing abdominal cavityChemotherapy performs the operation and human normal cell can be protected from the injury of radiopharmaceutical.
Summary of the invention
Technical problem to be solved by the invention is to provide safety aids before a kind of chemotherapy, can assist more accurateImplementation intraperitoneal chemotherapy operation and human normal cell can be protected from the injury of radiopharmaceutical.
In order to solve the above technical problems, the technical scheme is that provide safety aid before a kind of chemotherapy, it is specialSign is to include syringe body, and the syringe body includes syringe and piston, and the piston is from rear end insertion syringe, needleInjection port is arranged in the lower end of cylinder；Syringe needle in fixed is inserted at injection port, in syringe lower end around injection port coaxial arrangement annularSlot inserts outer sleeve on annular slot；The top of the interior syringe needle is wrapped up by outer sleeve, and the lower end of interior syringe needle is from housingIt is pierced by cylinder；In the lower end of outer sleeve, leakage protective device is set.
Preferably, the top of the outer sleeve is inserting end, and the lower part of outer sleeve is sheath end；The sheath end is medicalMetal material；The leakage protective device includes infundibulate elastic rubber shield, and the upper end inserting of the elastic rubber shield is solidIt is scheduled on the lower end at sheath end, the lower end of elastic rubber shield wraps the outer wall of interior syringe needle under no external force in closing.
Preferably, upper end to the lower end thickness of the elastic rubber shield is gradually thin；It is embedded in the side wall of elastic rubber shieldEnter three or more " C " shape strip elastic slices, the upper end of the elastic slice connects sheath end, the lower end of elastic slice court under no external force stateOuter lateral bend away from the central axes direction of outer sleeve, in initial shape under the action of elastic slice binds round power in elastic rubber shield lower endCurve inwardly (i.e. turn up power of the interior hoop power of elastic rubber shield slightly larger than elastic slice) when state；
Left and right perforation is opened up on the interior syringe needle peripheral wall that the lower end of elastic rubber sheath wraps, the interior needle in left and right perforationLeft and right marble are set in head, the left and right marble are contracted in the initial state in interior syringe needle；When pressing piston enable medical fluid fromWhen entering interior syringe needle in syringe, the pressure of medical fluid can squeeze out outward left and right marble, enable the arranged on left and right sides of left and right marbleIt can partially be squeezed out from left and right perforation, the outside extrusion portion of left and right marble can push outside the lower edge of elastic rubber shieldIt turns in toroidal (power of turning up of the extruding force joint elastic slice of i.e. left and right marble is greater than the interior hoop power of elastic rubber shield).
Preferably, the lower end of the inserting end package syringe, in the lower end outer wall of inserting the end barrel and syringe of outer sleeveBetween be arranged upper clamp space, between the sheath end of outer sleeve and the outer wall of interior syringe needle be arranged lower part grasping part；
Upper annular suction channel is set in the upper end inner wall of syringe, and the upper annular suction channel is assisted by projecting tube connectionSuction unit；Left suction channel is set in the left side wall of syringe, right suction channel is set in the right side wall of syringe；It is describedAnnular suction channel in the upper end connection of left and right suction channel, the lower end of left and right suction channel pass through upper clamp space connectionLower part grasping part.
Preferably, liquid absorption sponge is set in upper clamp space.
Preferably, up big and down small cone-shaped metal sheath is set on the interior syringe needle below elastic rubber shield.
Compared with prior art, the beneficial effects of the present invention are:
The present invention can assist more accurately implementing intraperitoneal chemotherapy operation and human normal cell can be protected from radioactivityThe injury of drug.In use, configured drug is drawn into syringe first, it is ensured that elastic rubber shield lower end toSyringe needle in interior banding, alignment lesions position punctures abdominal cavity, after the leakage protective device of outer sleeve lower end enters abdominal cavity,It is pico- to push piston, enable the outside extrusion portion of left and right marble that the lower edge of elastic rubber shield can be pushed to turn up in horn mouthShape；Then continue inwardly to promote outer sleeve and interior syringe needle, until interior syringe needle is inserted into lesions position, elastic rubber shield is by lesionPosition hinders and passes through generally to be adsorbed on around injection point outside bell-mouthed shaped like sucker；Pass through auxiliary suction device at this time(auxiliary suction device can be ordinary syringe or micro air pump) passes through annular suction channel, left and right suction channel, upper clampSpace and lower part grasping part by horn mouth gas or liquid pump out, enable the elastic rubber shield of expansion suck lesionPosition.Then, piston is pushed, medical fluid is injected into lesions position completely.
The setting of cone-shaped metal shield can be prevented when promoting outer sleeve to enter abdominal cavity, and surrounding skin squeezes elastic rubberShield enables its unexpected expansion in advance.And the liquid absorption sponge in upper clamp space is set being capable of body except clean up bodyLiquid forms liquid airproof ring body when body fluid complete wetting liquid absorption sponge, and suction is avoided excessively to cause to damage to organ surface.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention one；
Fig. 2 is the fit structure schematic diagram (elastic rubber shield contraction state) of outer sleeve and interior syringe needle；
Fig. 3 is the A-A of Fig. 2 to structural schematic diagram；
Fig. 4 is the fit structure schematic diagram (elastic rubber shield unfolded state) of outer sleeve and interior syringe needle；
Fig. 5 is the B-B direction structural schematic diagram of Fig. 4；
Fig. 6 is that (elastic rubber shield is contraction-like for the fit structure schematic diagram of outer sleeve and interior syringe needle in the embodiment of the present invention twoState)；
In figure: 1, auxiliary suction device；2, piston；
3, syringe；3.1, annular suction channel；3.2, right suction channel；3.3, left suction channel；
4, upper clamp space；5, liquid absorption sponge；
6, outer sleeve；6.1, sheath end；6.2, end is inserted；
7, lower part grasping part；
8, interior syringe needle；8.1, left marble；8.2, left perforation；8.3, right perforation；8.4, right marble；8.5, cone-shaped metal shield；
9, leakage protective device；9.1, elastic rubber shield；9.2, elastic slice.
Specific embodiment
Present invention is further described in detail with specific embodiment with reference to the accompanying drawing.
Embodiment one
As shown in Figure 1, safety aid before a kind of chemotherapy of the present invention, including syringe body, the syringe sheetBody includes syringe and piston, and for the piston from rear end insertion syringe, injection port is arranged in the lower end of syringe；It is inserted at injection portSyringe needle in fixed is coaxially disposed annular slot around injection port in syringe lower end, inserts outer sleeve on annular slot；In describedThe top of syringe needle is wrapped up by outer sleeve, and the lower end of interior syringe needle is pierced by out of outer sleeve；It is anti-in the setting leakage of the lower end of outer sleeveProtection unit.
The top of the outer sleeve is inserting end, and the lower part of outer sleeve is sheath end；The sheath end is medical metal materialMatter；The leakage protective device includes infundibulate elastic rubber shield, and the upper end inserting of the elastic rubber shield is fixed on shieldThe lower end at end is covered, the lower end of elastic rubber shield wraps the outer wall of interior syringe needle under no external force in closing.
As shown in Figures 2 and 3, upper end to the lower end thickness of the elastic rubber shield is gradually thin；In the side of elastic rubber shieldWall is embedded in three or more " C " shape strip elastic slices, and the upper end of the elastic slice connects sheath end, and the lower end of elastic slice is in no external force shapeTowards the outer lateral bend in the central axes direction away from outer sleeve under state, under the action of elastic slice binds round power in elastic rubber shield lower endCurve inwardly (i.e. turn up power of the interior hoop power of elastic rubber shield slightly larger than elastic slice) when original state；
As shown in Figures 4 and 5, open up left and right perforation on the interior syringe needle peripheral wall that the lower end of elastic rubber sheath wraps, it is left,Left and right marble are set in the interior syringe needle in right perforation, and the left and right marble are contracted in the initial state in interior syringe needle；When pressingWhen pressure piston enables medical fluid enter interior syringe needle from syringe, the pressure of medical fluid can squeeze out outward left and right marble, enable left and rightThe arranged on left and right sides of marble can partially be squeezed out from left and right perforation, and the outside extrusion portion of left and right marble can push elastic rubberThe lower edge of glue shield is turned up, and in toroidal, (power of turning up of the extruding force joint elastic slice of i.e. left and right marble is greater than elastic rubberThe interior hoop power of glue shield).
The lower end of the inserting end package syringe, is arranged between inserting end barrel and the lower end outer wall of syringe of outer sleeveLower part grasping part is arranged in upper clamp space between the sheath end of outer sleeve and the outer wall of interior syringe needle；
Upper annular suction channel is set in the upper end inner wall of syringe, and the upper annular suction channel is assisted by projecting tube connectionSuction unit；Left suction channel is set in the left side wall of syringe, right suction channel is set in the right side wall of syringe；It is describedAnnular suction channel in the upper end connection of left and right suction channel, the lower end of left and right suction channel pass through upper clamp space connectionLower part grasping part.
Liquid absorption sponge is set in upper clamp space.Liquid absorption sponge can body fluid except clean up body, to body fluidWhen complete wetting liquid absorption sponge, liquid airproof ring body is formed, suction is avoided excessively to cause to damage to organ surface.
Configured drug when in use, is drawn into syringe by the present apparatus first, it is ensured that elastic rubber shield lower end toSyringe needle in interior banding (can manually inside banding elastic rubber shield), alignment lesions position punctures abdominal cavity, to outer sleeveAfter the leakage protective device of lower end enters abdominal cavity, piston is pushed slightly, enables the outside extrusion portion of left and right marble that can push elasticityThe lower edge of rubber shield is turned up, and in toroidal, (left and right marble can squeeze out outward, but can not be from left and right perforation completelyAbjection)；Then continue inwardly to promote outer sleeve and interior syringe needle, until interior syringe needle is inserted into lesions position, elastic rubber shield quiltLesions position hinders and passes through generally to be adsorbed on around injection point outside bell-mouthed shaped like sucker；It is filled at this time by auxiliary suction(auxiliary suction device can be ordinary syringe or micro air pump) is set by annular suction channel, left and right suction channel, top folderHold space and lower part grasping part by horn mouth gas or liquid pump out, enable the elastic rubber shield of expansion suck diseaseStove position.Then, piston is pushed, medical fluid is injected into lesions position completely.
Embodiment two
As shown in fig. 6, in the present embodiment, up big and down small cone-shaped metal is arranged on the interior syringe needle below elastic rubber shieldSheath.The setting of cone-shaped metal shield can be prevented when promoting outer sleeve to enter abdominal cavity, and surrounding skin squeezes elastic rubber shieldCover enables its unexpected expansion in advance.
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appointWhat those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.Imitate embodiment.Without departing from the technical solutions of the present invention, to the above embodiments according to the technical essence of the inventionAny simple modification, equivalent variations and remodeling, still fall within the protection scope of technical solution of the present invention.