165 results about "Tissue fluid" patented technology

The invention discloses a coronary plaque biomechanical property calculation method, and belongs to the field of computational biofluid mechanics in biomedical engineering. According to the method, the influence of cardiac pulsation, coronary blood vessel complex geometric distribution characteristics and coronary plaque composition factors is integrally considered, and the coronary plaque biomechanical characteristics are calculated; wherein the number of the fluid computational domains is two, and the two fluid computational domains are respectively a coronary vessel intracavity blood flow area and a plaque tissue fluid flow area surrounded by a fibrous membrane and a blood vessel; the two structural computational domains are respectively an elastic blood vessel wall and an ultrathin flexible plaque fiber membrane; the plaque fiber membrane generates deformation movement under the pressure of blood in blood vessels on two sides and tissue fluid in the plaque; the motion of the coronary plaque fibrous membrane is described by adopting an independently researched and developed immersion film method, and compared with a traditional coronary plaque biomechanical characteristic calculation method, the method has better information integrity, better accuracy and wider applicability.

A histotripsy therapy system configured for the treatment of brain tissue is provided, which may include any number of features. In one embodiment, the system includes an ultrasound therapy transducer, a drainage catheter, and a plurality of piezoelectric sensors disposed in the drainage catheter. The ultrasound therapy is configured to transmit ultrasound pulses into the brain to generate cavitation that liquefies a target tissue in the brain. The drainage catheter is configured to detect the ultrasound pulses. An aberration correction algorithm can be executed by the system based on the ultrasound pulses measured by the drainage catheter to automatically correct for an aberration effect caused by the ultrasound pulses passing through a skullcap of the patient.

The invention provides a non-invasive tissue fluid lactic acid dynamic monitoring method. The method comprises the following steps: establishing a relation model of epidermal and subcutaneous lactic acid concentrations; steady-state current values under different epidermal lactic acid concentrations are obtained through in-vitro experiments, and then the function relation between the steady-state current values and the epidermal lactic acid concentrations is obtained; net current values under different subcutaneous lactic acid concentrations are obtained through human body experiments, a function relationship between the net current values and the subcutaneous lactic acid concentrations is established, and the function relationship can be used for a subsequent transdermal extraction detection process; substituting the measured epidermal lactic acid concentration into a relation model of epidermal and subcutaneous lactic acid concentrations to obtain an accurate concentration value of tissue fluid lactic acid monitoring; according to the method, in the dynamic real-time monitoring process of the lactic acid concentration of the tissue fluid, the concentration of the lactic acid extracted from the epidermis measured by the lactic acid sensor can be converted into the real-time and accurate lactic acid concentration of the subcutaneous tissue fluid, and rapid, painless, infection-free and continuous monitoring of the lactic acid level of the subcutaneous tissue fluid can be achieved.

The invention discloses a neurosurgery interventional therapy implantation dosing device, and belongs to the field of medical instruments, the neurosurgery interventional therapy implantation dosing device comprises an injection seat, the injection seat is provided with a first storage cavity for storing liquid medicine, the injection seat is provided with a catheter communicated with the first storage cavity, and the injection seat is fixedly provided with a first silica gel pad; the injection seat is provided with a flow guide assembly, the flow guide assembly is used for collecting tissue fluid generated by body rejection, the injection mechanism is fixed on an arm of a patient through a binding assembly, the injection mechanism is matched with the driving mechanism to add a medicament into the injection seat, and a flow guide groove in the outer wall of the injection seat guides the peripheral tissue fluid to flow. The supporting net facilitates the tissue fluid to enter the second storage cavity along the flow guide grooves, the arc-shaped plates in the second storage cavity are matched with the flow guide holes in the arc-shaped plates, the tissue fluid smoothly flows into the second storage cavity, and the structure constructs an efficient drainage path to efficiently collect the tissue fluid.

The application discloses a bladder tumor specimen extractor which comprises an adjusting transmission assembly capable of controlling preliminary cutting, a separating assembly capable of separating a tissue part and a liquid part of the bladder tumor and an operating handle. The application belongs to the technical field of bladder tumor surgery. When the bladder tumor temporarily stays on a tissue liquid passing layer, the removed bladder tumor can be punctured by a plurality of groups of puncture heads, so that the tissue part of the bladder tumor is blocked by the tissue liquid passing layer, and the tissue liquid and the plasma part of the bladder tumor can pass through the tissue liquid passing layer and enter a liquid storage bag. After sampling is completed, medical staff can take out the liquid storage bag to sample the tissue liquid and the plasma part of the bladder tumor, and the tissue part of the bladder tumor can be sampled from the tissue liquid passing layer. The application provides a brand-new bladder tumor sampling experience, greatly reduces the possibility of tissue liquid and plasma remaining in the bladder and brings convenience to medical staff.

The application discloses a kind of lymphedema wearable type baking therapy drainage devices, including pressure sleeve, pressure sleeve includes multiple independent control outer layer air bag and multiple independent control inner layer air bag, outer layer air bag and inner layer air bag staggered arrangement and along the axial distribution of limb;Each outer layer air bag and each inner layer air bag independent control, along the direction of far end to near end, in turn, air bag is inflated and deflated control, to complete a cycle air bag progressive drainage pressurization.The pressure sleeve of the application has double-layer air bag, each air bag is independently controlled, and can extrude tissue fluid from far end to near end, so that tissue fluid moves to near end, and pushes and extrudes tissue fluid from limb to trunk direction.Because inner layer air bag and outer layer air bag are staggered arrangement, can avoid effusion to remain in the gap of adjacent annular air bag;The pressure sleeve of the application is provided with inner support tube, and forms circumferential block.

The invention relates to the technical field of biological materials, and provides an absorbable self-repairing suture line for maintaining the stability of a mechanical biological microenvironment and a preparation method of the absorbable self-repairing suture line. According to the suture line, an absorbable high polymer material is adopted as a matrix, and PLA microcapsules containing a medical-grade cyanoacrylate n-octyl ester repairing agent are uniformly dispersed in the matrix through a melt blending spinning process. When the suture line generates microcracks at dynamic tissue parts such as cardiovascular and digestive tracts due to periodic stress, the stress at the tip of the cracks enables the microcapsules to be broken to release the repairing agent, rapid in-situ polymerization occurs under triggering of tissue fluid, the self-repairing efficiency of 90% or above is achieved, and the strength retention rate of 95% or above is maintained in the key rehabilitation period of the suture line. The defect that a traditional absorbable suture line is prone to fatigue fracture in a dynamic environment is overcome, the mechanical integrity is actively maintained through an intelligent self-repairing mechanism, all components can be completely degraded and absorbed, and a safer and more reliable solution is provided for dynamic tissue repairing.

This utility model relates to the field of blood sampling technology, specifically to a medical blood sampling device, comprising: a base plate, on which a support frame is fixedly mounted; and a driving assembly, which includes a rotating wheel disposed above the base plate and on one side of the support frame, with multiple collection cylinders slidably mounted in a circumferential array inside the rotating wheel. Through the design of the collection assembly, during blood sampling after a patient's finger is punctured, a rubber column can be used to squeeze and rub the sides of the fingertip, accelerating the flow of blood from the puncture point and dripping blood containing tissue fluid. The roller design allows for the enlargement of the roller diameter after the first drop of blood containing tissue fluid drips from the puncture point, lifting the finger and facilitating subsequent sampling. The dripped blood can be collected through the collection cylinders, preventing it from dripping to other places and causing inconvenience for subsequent cleaning.

The utility model provides a human body model-based low-frequency magnetic field test system, which comprises a human body model, a plurality of organ models and a data acquisition instrument are arranged in the human body model, each organ model is provided with a plurality of magnetic field probes, and the data acquisition instrument is arranged below the organ models and connected with the magnetic field probes. The human body model is filled with an electrolyte solution, and the organ model and the data acquisition instrument are both placed in the electrolyte solution. The magnetic field probe solves the problems that in the prior art, a used magnetic field probe with a fixed shape and a fixed size is greatly different from an actual human organ, and the magnetic field environment neglects the influence of human skin and in-vivo tissue fluid, so that measured magnetic field data is inaccurate.

The application provides a kind of simulated human tissue fluid and its preparation method and application, it relates to wireless communication technical field, the simulated human tissue fluid includes: water, 55wt%~75wt% by mass percentage;Ionic inorganic salt, 2wt%~5wt%;Albumin, 10wt%~18wt%;Lipid, 12wt%~20wt%;Non-ionic surfactant, 2wt%~4wt%;Preservative, 0.2wt%~1wt%.Therefore, by water, ionic inorganic salt, albumin, lipid, non-ionic surfactant and preservative cooperate to simulate the skin of human body, so as to be able to carry out APD test in the frequency range of 10GHz~30GHz, and the stability of simulated skin tissue fluid is good, and the cost is lower.

The utility model relates to a tumor-free isolation device for laparoscopic surgery, and belongs to the technical field of medical instruments. The tumor-free isolation device for the laparoscopic surgery comprises a cannula assembly and a tumor isolation assembly, wherein the tumor isolation assembly is arranged in the cannula assembly in a penetrating manner and extends out of the front end of the cannula assembly; the tumor isolation assembly comprises a connecting pipe, a head rod, a tumor isolation bag and a traction rod, the head rod is hinged to the front end of the connecting pipe, the tumor isolation bag is arranged on the head rod, the traction rod slidably penetrates through the connecting pipe, and the front end of the traction rod is hinged to the head rod; when the traction rod moves back and forth, the head rod can be driven to swing up and down, and the included angle between the opening of the tumor isolation bag and the axis of the connecting pipe is changed. According to the tumor-free isolation device for the laparoscopic surgery, the orientation of the opening of the tumor isolation bag can be automatically changed, so that the opening of the tumor isolation bag is aligned with a focus part, the bearing area is larger, and waste tissue or tissue fluid is not prone to escaping.

The invention relates to the field of medical detection instruments, in particular to a human body implantation depth self-adaptive sensor. Comprising a sensor shell and a probe fixedly connected with the sensor shell, the probe is provided with a plurality of reaction areas located at different axial positions, and the outer side of the probe in the reaction areas is provided with a biological enzyme which is in contact reaction with human body tissue fluid; an induction antenna is arranged on the sensor shell and is used for transmitting a detection electric signal to a human body and receiving a feedback electric signal formed by reflection or conduction of different tissue layers of the human body. Through cooperative work of probe multiple reaction areas, induction antenna positioning and mainboard screening, after battery power supply, an antenna detection signal recognizes a reaction area tissue layer, and a mainboard collects an ideal layer current outflow result, the problem of low detection efficiency caused by tedious and time-consuming operation of manually adjusting the detection depth by medical staff is solved; and the detection stability is improved, the operation threshold is reduced, and individual differences are adapted.

This utility model discloses an adjustable cell filter, including a filter cover and a connecting sleeve disposed at the bottom of the filter cover. The top of the filter cover is open, and a retaining ring is fixed to the lower circular inner wall of the center of the filter cover. A placement ring is placed at the top of the retaining ring, and a cylindrical filter frame is fixed inside the placement ring. The top of the cylindrical filter frame is open. By adding a novel flow guiding and anti-splash device inside the upper side of the center of the filter cover, located above the cell filter membrane, when tissue fluid is poured in, it is poured into the conical flow guiding and anti-splash cover. Its smooth inner wall allows the tissue fluid to flow slowly, avoiding impact on the cell filter membrane and extending its life. The conical structure can also converge and guide the flow. The flat cylindrical protective cover further buffers the flow, allowing the tissue fluid to fall smoothly onto the cell filter membrane, achieving uniform filtration. The hemispherical diffuser block arches upward to diffuse the tissue fluid, avoiding excessive local pressure that could damage the filter membrane, optimizing distribution, and improving efficiency and quality.

The utility model discloses a medical surgical membrane, which comprises a surgical area, a first electrode, a second electrode, a third electrode and a fourth electrode, the collecting pipe is arranged below the operation area; the guiding bag is provided with a first connecting end and a second connecting end which are opposite to each other, the first connecting end is connected with the lower end of the operation area, the second connecting end is connected with the upper end of the collecting pipe, and the width of the guiding bag is gradually reduced in the direction from the first connecting end to the second connecting end; and the filter is detachably connected with the guide bag or the collecting pipe. According to the utility model, the filter is detachable, and when different tissues need to be screened in the operation liquid in an operation, different tissue liquids can be obtained only by replacing different filters without replacing the whole operation membrane, so that the time required for replacing the filter is greatly shortened, and the normal operation of the operation is not delayed.

The utility model discloses a high sharpness injection needle, including needle tube and needle tip, the needle tip adopts three -stage tapering type multi -edge surface structure, and this three -stage tapering type multi -edge surface structure is composed of main cutting part, transition part and micro blade part, the main cutting part includes three symmetrical distribution's first inclined plane, and every first inclined plane bifurcates two second inclined planes to form transition part, and every second inclined plane bifurcates two third inclined planes to form micro blade part, the needle tip surface is equipped with a plurality of micro -groove, and the third inclined plane intersection of on micro blade part forms nanometer -class blade edge, and this blade edge edge is equipped with periodic micro sawtooth. The utility model discloses a needle tip is three -stage tapering type multi -edge surface structure, and the puncture resistance is reduced in stages, and the pain feeling is reduced, sets up micro sawtooth and can reduce the tissue contact area through " point cutting", and the local stress concentration when puncturing, and then delay passivation, sets up micro -groove and can guide the tissue fluid flow, destroys the negative pressure adsorption effect, and improves the needle insertion smoothness.

The invention discloses an anti-drifting peritoneal dialysis pipeline convenient to fix, relates to the technical field of peritoneal dialysis pipelines, and aims to solve the technical problems that a polyester sleeve is insufficient in fixing and anti-traction capacity, and a catheter is prone to shifting and even falling off due to accidental pulling. Comprising a fixing bellyband surrounding the waist and belly, a first dialysis tube arranged at a subcutaneous tunnel section, a fixing mechanism and an auxiliary mechanism. According to the invention, the compressible elastic anchor wing is in a dry and compressed state in the implantation process, rapidly absorbs tissue fluid after implantation to generate hydration expansion and recover an outward expansion form, and is matched with micron-sized pyramid-shaped textures on the surface of the micro-texture biological anchoring area to provide an ideal scaffold for fibroblast attachment and collagen deposition; the catheter can be mechanically interlocked with surrounding abdominal wall fascia and subcutaneous fiber adipose tissue, the initial subcutaneous stability of the dialysis catheter is guaranteed, and the problems that a polyester sleeve is insufficient in fixing and anti-traction capacity, and the catheter is prone to displacement and even disengagement due to accidental pulling are solved.

The invention relates to the technical field of non-invasive glycosylated hemoglobin detection, and discloses non-invasive glycosylated hemoglobin detection test paper and method.The non-invasive glycosylated hemoglobin detection test paper comprises a sampling layer, a combination cushion layer is bonded to the lower surface of the sampling layer, and a nitrocellulose membrane layer is bonded to the side face, away from the sampling layer, of the combination cushion layer; a water absorption layer is adhered to one side surface, far away from the combined cushion layer, of the nitrocellulose membrane layer; a PVC bottom plate is adhered to one side surface, far away from the nitrocellulose membrane layer, of the water absorption layer; through cooperation of the structures, the pain feeling during sampling can be reduced, and the tissue fluid collecting efficiency is improved.

The application relates to the technical field of electrochemical detection, in particular to a micro-needle electrochemical biosensor based on an aptamer and a preparation method thereof, which is a three-electrode system, the three-electrode system comprises a working electrode, a reference electrode and a counter electrode, and the base materials of the working electrode, the reference electrode and the counter electrode are all polylactic acid micro-needles with a sputtered gold layer; the modification material of the working electrode comprises 6-mercapto-1-hexanol, 3-aminopropyltriethoxysilane, glutaraldehyde, an amino-modified cortisol aptamer and bovine serum albumin. The micro-needle electrochemical biosensor based on the aptamer and the preparation method thereof are adopted to construct a three-electrode micro-needle system for detecting cortisol in tissue fluid, continuous and painless detection can be realized, the compliance of patients is improved, the detection limit is low, the detection range is wide, the sensitivity is high, and the needs of human body for daily detection of cortisol can be met.

1. The name of the design product: drainage device. 2. The use of the design product: used as tissue fluid drainage and collection device. 3. The design features of the design product: in shape. 4. The picture or photo that best shows the design features: perspective view 1.

The invention provides an auxiliary retractor for laparoscopic surgery, and belongs to the technical field of medical instruments. Comprising a drag hook body, a notch is formed in an inner cavity of the top of the drag hook body, a suction opening is fixedly connected to the end of the drag hook body, and an L-shaped connecting frame is fixedly connected to the end of an inclined supporting frame; the supporting and stabilizing assembly is used for enhancing the stability of the drag hook body and tissues in the skin, and the supporting and stabilizing assembly is connected with the drag hook body. By arranging the supporting and stabilizing assembly, when making contact with tissue in the skin, the drag hook body makes contact with the supporting and stabilizing assembly, the drag hook body is lifted upwards and attached to the tissue in the skin, shaking of a doctor to the tissue in the skin during surgical operation can be relieved, the situation that tissue fluid is squeezed and overflows is reduced, and outflow of a large amount of tissue fluid is reduced; clear view during an operation is ensured, and operation hidden dangers caused by view problems are reduced.

This utility model relates to the field of minimally invasive postoperative wound dressing technology, specifically a minimally invasive postoperative wound dressing with wound closure function. It includes an adhesive layer, release paper installed on both sides of the bottom of the adhesive layer, low-sensitivity adhesive tape evenly installed on both sides of the top of the adhesive layer, and a sterilization layer embedded in the middle of the adhesive layer. The improved minimally invasive postoperative wound dressing adds a first elastic band and a second elastic band. When the wound dressing is applied to the wound surface, the first and second elastic bands can be pulled to traction the sides of the adhesive layer, thereby effectively closing the wound, reducing the risk of wound dehiscence, and promoting rapid wound healing. An absorbent layer made of highly absorbent resin is also added, allowing the absorbent layer to quickly absorb tissue fluid exudated from the wound during the healing process, helping to reduce the risk of wound infection and thus promoting wound healing.

The invention relates to the technical field of medical instruments, in particular to an intelligent biological response regulation and control system for wound repair, which comprises a biological signal sensing module, a decision center and a regulation and control module. The biological signal sensing module monitors pH, temperature, inflammatory factor concentration and tissue fluid exudation rate of the wound surface in real time; the decision center carries out fusion analysis on the multi-source biological signals, intelligently discriminates a healing stage and generates a regulation and control instruction; the regulation and control module is used for accurately controlling the time sequence and dosage release of various bioactive substances according to instructions through a micro-fluidic chip structure. According to the invention, monitoring and intervention on wound healing are realized, and the repairing efficiency is improved.

The utility model discloses a drainage tube leakage liquid suction mechanism and abdominal drainage tube anti-seepage drainage device. The drainage tube leakage liquid suction mechanism includes: sheath, the side wall is equipped with the longitudinal entry for clamping to the drainage tube, and the lower part is formed with containing cavity and the absorption hole for leading out tissue fluid, the number is at least 1, is equipped with the clamping gap of being set to the drainage tube with its sleeve, is used for absorbing tissue fluid, the seepage liquid suction tube is fixed to the outside of sheath with one end and communicates with the absorption hole, and the other end is connected with the seepage liquid storage bag of connectable negative pressure connection, and the sticking part is used for fixing sheath on the skin incision. The utility model discloses through the cooperation of sheath and absorption pad, can improve the stability of the drainage tube and the patient's body connection, and the exuded tissue fluid is absorbed by absorption pad first and then is sucked by seepage liquid suction tube, can effectively prevent the overflow of exudate, and the replaceable absorption pad is favorable to guarantee its patency, makes the skin incision be in the relatively ventilated dry environment, is favorable to the recovery of illness.

This invention discloses a connecting sleeve, its manufacturing method, and an electrode assembly. The connecting sleeve, used at the connection point between an electrode lead and an extension lead, includes a sleeve body and a sealing portion. The sleeve body has a channel for accommodating the electrode lead and the extension lead, and the sleeve body has opposing first and second connecting ends. The sealing portion is disposed at the first and / or second connecting ends, forming a seal between the electrode lead and / or the extension lead at the first and / or second connecting ends respectively when the electrode lead and / or the extension lead are accommodated within the channel. By providing the sealing portion, the connecting sleeve can form a seal at both ends of the sleeve body when the electrode lead and the extension lead are connected within the channel, preventing tissue fluid from entering the channel through the gaps at both ends of the sleeve body. This prevents tissue fluid leakage into the channel from affecting the signal connection of the electrode lead and the extension lead, avoiding product malfunctions and other adverse effects.

The invention discloses application of alpha-cyanoacrylate n-butyl ester tissue glue in treatment of diverticulum of digestive tract. The tissue glue is used for preparing a medicine for treating the diverticulum of the digestive tract; during treatment, the diverticulum is injected through an endoscope, tissue glue makes contact with tissue fluid to be rapidly polymerized, the diverticulum is sealed, diverticulum complications are prevented, biocompatibility is good, degradation is achieved, no residues exist, the treatment effective rate is 100%, no complications exist, and the recurrence rate is low.

The application discloses a kind of carbon-nitrogen fluorescent quantum dot tumor cell detection kit and its use method, it is characterized in that, including A liquid and B liquid;Wherein, the A liquid is carbon-nitrogen fluorescent quantum dot solution, the B liquid is buffer solution;The carbon-nitrogen fluorescent quantum dot solution is composed of carbon-nitrogen fluorescent quantum dot and solvent.Its use process, at least includes the following steps: step S10, provides reagent kit A liquid, B liquid, patient pleural fluid, urine sample;Step S20, high-speed centrifugation, after B liquid resuspension, add A liquid dyeing;Step S30, high-speed centrifugation, B liquid resuspension;Step S40, spectrophotometer detects fluorescence intensity.The detection of tumor cells in pleural fluid and urine tissue fluid of the application has high specificity and high sensitivity, and simple operation, cost is small.Not only can improve the diagnosis level of doctor to clinical tumor patient, also can provide help for prognosis evaluation of tumor, drug screening, individualized treatment.

The utility model discloses a novel circumcision anastomat which comprises an inner ring and an outer ring, the inner ring is used for supporting the inner side of a prepuce, the outer ring is composed of a pair of outer ring lock catches which can be mutually locked, a dull knife is arranged on the inner side of each outer ring lock catch, a drainage assembly is arranged on each dull knife, and the outer ring lock catches are buckled on the outer side of the inner ring. The blunt knife extrudes the foreskin tissue on the outer side of the inner ring, the to-be-cut tissue and the reserved tissue are isolated through the arranged inner ring and the locking mechanism, so that the to-be-cut tissue necroses and falls off, then cutting is completed, in addition, tissue fluid is guided out to be away from the isolation belt through the drainage assembly, and it is guaranteed that the position nearby the tissue fluid is kept dry; lymph accumulation and flowing around are avoided, and cross infection is reduced, so that edema is relieved, and healing is faster.

The utility model discloses a calibration detection device based on a rectangular waveguide. The detection device is used for testing in an occasion with the center frequency being 600 MHz and comprises a rectangular hollow cavity, a dielectric substrate is arranged at the end of one side of the cavity, a rectangular waveguide is arranged on the side, away from the cavity, of the dielectric substrate and comprises a shell, tissue fluid is filled in the shell, an opening part is formed in one side of the shell, and the opening part is arranged in the cavity. The opening part side is connected with the dielectric substrate; one side of the chamber is provided with a connecting end, and the connecting end is used for being connected with a signal source to be tested; impedance matching is performed on the rectangular waveguide through the dielectric substrate. The calibration detection device meets the relevant requirements for evaluating the calibration of the probe in the tissue fluid and realizes the capability of calculating the SAR value.

The fully-embedded self-driven interstitial fluid collecting type dilator comprises a dilation bag, an interstitial fluid filtering bag is arranged on the left side of the dilation bag, the interstitial fluid filtering bag is of an oblate sphere structure after being deformed, and the bag wall is a micropore dialysis filter membrane; a liquid inlet in the left end of the expansion bag is communicated with a liquid outlet in the right end of the interstitial fluid filtering bag through a liquid guide pipe, a valve control mechanism is arranged in the middle of the liquid guide pipe, and a negative pressure generating mechanism used for generating negative pressure in the interstitial fluid filtering bag is arranged in the middle of the liquid guide pipe; according to the full-embedded self-driven tissue fluid collection type expander, the built-in semi-permeable negative pressure generation mechanism is used for collecting and filtering tissue fluid, the tissue fluid is controllably pumped into the expansion bag through the valve control mechanism, and the self-expansion extrusion pump or the electric suction pump can be selected as the negative pressure generation mechanism. Safe expansion which does not need external puncture water injection, does not depend on external energy, is controllable in expansion speed and can quickly release pressure in an emergency state is achieved.

The invention discloses a bladder tumor specimen extractor which comprises an adjusting transmission assembly capable of controlling preliminary dicing, a separating assembly capable of separating a tissue part and a liquid part of a bladder tumor and an operating handle. The invention belongs to the technical field of bladder tumor surgery. When the bladder tumor temporarily exists on the tissue fluid passing layer, the puncture heads can puncture the taken-down bladder tumor, so that the tissue part of the bladder tumor is blocked through the tissue fluid passing layer, and the tissue fluid and plasma part of the bladder tumor can penetrate through the tissue fluid passing layer and enter the fluid storage bag; medical staff can sample tissue fluid and plasma parts of the bladder tumor by taking down the fluid storage bag, the tissue part of the bladder tumor can be sampled from the tissue fluid passing layer, brand-new bladder tumor sampling experience is provided, the possibility that the tissue fluid and the plasma are left in the bladder is greatly reduced, and convenience is brought to the medical staff.