CN218247380U - Autogenous cutting rescue treatment equipment - Google Patents

Autogenous cutting rescue treatment equipment Download PDF

Info

Publication number
CN218247380U
CN218247380U CN202221858579.1U CN202221858579U CN218247380U CN 218247380 U CN218247380 U CN 218247380U CN 202221858579 U CN202221858579 U CN 202221858579U CN 218247380 U CN218247380 U CN 218247380U
Authority
CN
China
Prior art keywords
main body
fixedly arranged
storing
drawer
tracheostomy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202221858579.1U
Other languages
Chinese (zh)
Inventor
樊维佳
罗远芳
黄巧玲
刘敏
何树兰
时文丽
曹慧仪
黄淑龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202221858579.1U priority Critical patent/CN218247380U/en
Application granted granted Critical
Publication of CN218247380U publication Critical patent/CN218247380U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Accommodation For Nursing Or Treatment Tables (AREA)

Abstract

The utility model relates to a technical field of otolaryngology branch of academic or vocational study clinical medical equipment discloses a autogenous cutting rescue treatment equipment, include: the device comprises a main body, a moving structure, a storage structure, a workbench structure and a recovery structure; the utility model provides a autogenous cutting rescue equipment through setting up the removal structure in the main part outside, makes it have the function of free removal, stores the structure at the inside fixed mounting of main part, stores the structure and is located inside the main part, and is divided into a plurality of spaced apart regions, makes the medical device who stores in the storage structure can not lead to the position confusion because of removing, has solved among the prior art first aid operation equipment and has been difficult to send to first aid patient's side in good order, causes the problem of influence to autogenous cutting operation.

Description

Autogenous cutting rescue treatment equipment
Technical Field
The utility model belongs to the technical field of otolaryngology branch of academic or vocational study clinical medicine equipment's technique and specifically relates to an autogenous cutting rescue treatment equipment.
Background
Acute epiglottitis is a common disease in ear-nose-throat emergency departments, patients of the type often have difficulty in breathing due to swelling of epiglottis, and patients can be suffocated by serious patients; if the patients are not rescued in time, life danger may occur.
The most effective way to rescue the patients is tracheotomy (tracheotomy). However, various emergency surgical equipment such as surgical bags, disposable/metal tracheal tubes, flashlights, syringes, cotton balls, sputum aspirators, emergency inflatable pillows, etc. are required during the procedure.
At present, the devices and equipment are not integrated in the instrument, and are difficult to be delivered to the patient in the first time, which brings certain difficulty to the rescue work of the patient for medical workers.
In prior art, use the carrying trolley to transport rescue apparatus usually, the carrying trolley has the multilayer platform that is used for placing the instrument, and every layer of platform all is open state, has the instrument because of removing the position confusion and even the risk that drops outside, and the carrying trolley only has the carrying function, can't provide workstation and rubbish recovery unit for the autogenous cutting operation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an autogenous cutting salvages treatment facility aims at solving among the prior art first aid operation equipment and is difficult to send to first aid patient's side in good order, causes the problem of influence to the autogenous cutting operation.
The utility model discloses a realize like this, the utility model relates to a autogenous cutting rescue treatment equipment, include:
the device comprises a main body, a moving structure, a storage structure, a workbench structure and a recovery structure;
the main body is in a cuboid shape, the top surface and the bottom surface of the main body are respectively provided with a pair of long edges and a pair of short edges, the main body is provided with a first side surface, a second side surface, a third side surface and a fourth side surface, the first side surface and the third side surface are adjacent to the long edges, and the second side surface and the fourth side surface are adjacent to the short edges;
the moving structure is fixedly arranged on the outer side of the main body through the bottom surface and the top of the first side surface and is used for a user to drive the main body;
the storage structure is fixedly arranged inside the main body through the first side surface and is fixedly arranged on the outer side of the main body through the third side surface and used for storing various medical devices;
the workbench structure is fixedly arranged in the main body through the tops of the first side surface, the second side surface and the third side surface and is used for providing a workbench for placing various medical devices during operation;
the recycling structure is fixedly arranged inside the main body through the bottom of the first side face and used for recycling garbage.
In one embodiment, the moving structure comprises a hand push rod and a plurality of pulleys;
the hand push rod is fixedly arranged on the outer side of the main body through the top of the first side face;
the pulleys are fixedly arranged on the outer side of the main body respectively through four corner positions of the bottom surface.
In one embodiment, the storage structure comprises a first drawer, a second drawer, a third drawer, a sputum suction tube storage tank and a first-aid inflatable pillow placing place;
the first layer of drawers, the second layer of drawers and the third layer of drawers are fixedly arranged inside the main body from top to bottom in sequence through the first side face and are used for storing various medical devices;
the sputum suction pipe storage tank is fixedly installed on the outer side of the main body through the top of the third side face and used for storing the sputum suction pipe;
the first-aid inflatable pillow is placed at the position where the first-aid inflatable pillow is placed, is fixedly installed at the bottom of the first side face in the main body and is used for storing the first-aid inflatable pillow.
In one embodiment, the workbench structure comprises a bidirectional push-pull slide rail, a telescopic slide rail and an extension working plate;
the bidirectional push-pull sliding rails are fixedly arranged on two sides of the interior of the main body through the tops of the first side surface and the third side surface, and have the function of sliding inside and outside through the second side surface;
the extension working plate is fixedly arranged on the telescopic sliding rail, the telescopic sliding rail is fixedly arranged on the bidirectional push-pull sliding rail, and the telescopic sliding rail has the function of sliding on the bidirectional push-pull sliding rail;
the middle part of the extension working plate is concave and used for placing medical devices.
In one embodiment, the recycling structure comprises a medical waste bin and a household waste bin;
the medical garbage can and the household garbage can are fixedly installed in the main body through the bottom of the first side face respectively.
In one embodiment, the first tier drawer has a number of zones;
the zones are used for storing sterile gloves, sterile yarn blocks, autogenous cutting yarn blocks, cotton balls, 20ml syringes, blades, disposable tracheal tubes, metal tracheal tubes, ophthalmic scissors, flashlights and laces from outside to inside respectively.
In one embodiment, the second tier drawer has a number of zones;
the areas are used for storing an infusion tube, a syringe, an indwelling needle, a 3M application, a scalp needle, a blood taking needle, a cotton swab, an adhesive tape, a tourniquet, lidocaine, blood biochemistry, blood convention and DIC from outside to inside respectively.
In one embodiment, the third tier drawer has zones;
the plurality of areas are respectively used for storing the tracheotomy bag, the cricothyroid membrane puncture bag, the head lamp and the sputum suction bag.
In one embodiment, the top surface of the main body is provided with a plurality of grooves for storing disinfection solution during operation.
The utility model provides a autogenous cutting salvages treatment facility has following beneficial effect:
1. the utility model provides a autogenous cutting rescue equipment through setting up the removal structure in the main part outside, makes it have the function of free removal, stores the structure at the inside fixed mounting of main part, stores the structure and is located inside the main part, and is divided into a plurality of spaced apart regions, makes the medical device who stores in the storage structure can not lead to the position confusion because of removing, has solved among the prior art first aid operation equipment and has been difficult to send to first aid patient's side in good order, causes the problem of influence to autogenous cutting operation.
2. The utility model discloses in set up the workstation structure, made the extension work board stretch out the main part outside through two-way push-and-pull slide rail and flexible slide rail, can regulate and control the extension distance of extension work board in the certain limit, for the operation provides a workstation of placing medical device, offers convenience for the operation.
The utility model discloses integrated recovery structure for retrieve the rubbish that produces in the operation, effectively avoided the pollution to the environment.
Drawings
Fig. 1 is a schematic structural view of an autogenous cutting rescue treatment device provided by an embodiment of the present invention;
fig. 2 is a schematic view of a state of an autogenous cutting rescue treatment device provided by an embodiment of the present invention;
fig. 3 is a schematic view of the internal structure of a drawer of the autogenous cutting rescue treatment device provided by the embodiment of the present invention.
Reference numerals: 1-main body, 2-moving structure, 3-storing structure, 4-workbench structure, 5-recovering structure, 11-top surface, 12-bottom surface, 13-first side surface, 14-second side surface, 15-third side surface, 16-groove, 21-hand push rod, 22-pulley, 31-first layer drawer, 32-second layer drawer, 33-third layer drawer, 34-sputum suction pipe storage tank, 35-emergency inflation pillow placing position, 41-bidirectional push-pull slide rail, 42-telescopic slide rail, 43-extension working plate, 51-medical garbage can and 52-domestic garbage can.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
Referring to fig. 1 and 2, a preferred embodiment of the present invention is provided.
Main part, removal structure, storage structure, workstation structure, recovery structure.
Specifically, the main part appearance is the cuboid, and the top surface and the bottom surface of main part have a pair of long limit and a pair of minor face respectively, and the main part has two pairs of parallel sides, first side and third side, second side and fourth side, and first side and third side are adjacent with the long limit, and second side and fourth side are adjacent with the minor face.
More specifically, the moving structure is fixedly installed at the outer side of the main body through the bottom surface and the top of the first side surface, and is used for a user to drive the main body to move.
More specifically, the storage structure is fixedly installed inside the main body through the first side surface and is fixedly installed outside the main body through the third side surface, and the storage structure is used for storing various medical devices.
More specifically, the workbench structure is fixedly arranged in the main body through the first side face, the second side face and the third side face, the workbench structure can be extended in a telescopic mode, the workbench structure is stored in the main body at ordinary times, the workbench structure is drawn out when the workbench structure is used, and a platform for placing medical devices is provided for medical staff.
More specifically, the recycling structure is fixedly mounted inside the main body through the first side for recycling the garbage.
The utility model provides a autogenous cutting salvages treatment facility has following beneficial effect:
1. the utility model provides a autogenous cutting rescue equipment through setting up the removal structure in the main part outside, makes it have the function of free removal, stores the structure at the inside fixed mounting of main part, stores the structure and is located inside the main part, and is divided into a plurality of spaced apart regions, makes the medical device who stores in the storage structure can not lead to the position confusion because of removing, has solved among the prior art first aid operation equipment and has been difficult to send to first aid patient's side in good order, causes the problem of influence to autogenous cutting operation.
2. The utility model discloses in set up the workstation structure, made the extension work board stretch out the main part outside through two-way push-and-pull slide rail and flexible slide rail, can regulate and control the extension distance of extension work board in the certain limit, for the operation provides a workstation of placing medical device, offers convenience for the operation.
3. The utility model discloses integrated recovery structure for retrieve the rubbish that produces in the operation, effectively avoided the pollution to the environment.
In some embodiments, the moving structure includes a push bar and a number of pulleys.
Specifically, the handspike passes through the top fixed mounting of first side in the outside of main part, and a plurality of pulleys set up respectively on four bight positions of main part bottom surface, and the user can be through promoting the handspike, is removed by a plurality of pulley drive main parts.
In some embodiments, the storage structure comprises a first tier drawer, a second tier drawer, a third tier drawer, a sputum aspirator storage canister, and a first aid re-starting pillow placement.
Specifically, the first layer drawer, the second layer drawer and the third layer drawer are fixedly installed inside the main body from top to bottom through the first side face, and the first layer drawer is located below the hand push rod.
More specifically, first floor drawer, second floor drawer, third floor drawer are used for storing all kinds of medical device respectively, can take out the drawer when using to take inside medical device, can understand that, first floor drawer, second floor drawer and third floor drawer are inside all to be divided into several spaced apart regions for store different grade type medical device, because the medical device of different grade type is classified to be stored in spaced apart different regions, the medical device can not cause the confusion because of the motion of main part when the transportation, the hidden danger that medical device confused when having avoided the operation.
Referring to fig. 3, more specifically, the first-level drawer is provided with a plurality of regions for respectively storing different medical devices; more specifically, the number of the first layer is 11 in total, and the first layer is arranged in three layers, wherein the areas 1a, 2a, 3a and 4a are positioned at the outermost layer, the areas 5a, 6a, 7a, 8a and 9a are positioned at the middle layer, and the areas 10a and 11a are positioned at the innermost layer; the area 1a is used for storing sterile gloves, the area 5CM long and 4CM wide and 2a wide is used for storing sterile yarn blocks, the area 4CM long and 3CM wide and 3a is used for storing air cutting yarn blocks, the area 4CM long and 3CM wide and 4a is used for storing cotton balls, the area 4CM long and 3.5cm wide and 5a is used for storing 20ml syringes, the area 7CM long and 3CM wide and 6a is used for blades, the area 5CM long and 2.5cm wide and 7a is used for storing disposable tracheal tubes, the area 6CM long and 3.5cm wide and 8a is used for storing metal tracheal tubes, the area 6.5CM long and 3.5cm wide and 9a is used for storing ophthalmic scissors, the area 6.5CM long and 3CM wide and 10a is used for storing flashlights, the area 15CM long and 3CM wide and 11a wide are used for storing electric torches, and the area 3CM long and 3 wide are used for tying belts.
More specifically, the second layer area is provided with 13 areas, namely 1b, 2b, 3b, 4b, 5b, 6b, 7b, 8b, 9b, 10b, 11b, 12b and 13b from outside to inside and from left to right; wherein, 1b is used for storing the transfusion tube, 20CM long and 12cm,2b for storing the injector, 20CM long and 6cm,3b for storing the indwelling needle, 15CM long and 6cm wide and 4b for storing the 3M application, 15CM long and 10cm,5b for storing the scalp needle, 5CM long and 5cm wide and 6b for storing the blood taking needle, 5CM long and 5cm wide and 7b for storing the cotton swab, 16CM long and 6cm wide and 8b for storing the adhesive tape, 6CM long and 6cm wide and 6b for storing the tourniquet, 6CM long and 6cm wide and 10b for storing the lidocaine, 11CM long and 6cm wide and 111b for storing the blood biochemistry, 14CM long and 5cm wide and 12b for storing the blood routinely, 10CM long and 5cm wide and 13b for storing the DIC, and 10CM long and 111115 wide.
More specifically, the third layer region is provided with four regions, 1c, 2c, 3c, 4c in this order; wherein, 1c is used for storing the tracheotomy bag, the length is 31CM, the width is 12CM,2c is used for storing the cricothyroid membrane puncture bag, the length is 31CM, the width is 6CM,3c is used for storing the head lamp, the length is 31CM, the width is 6CM,4c is used for storing the sputum suction bag, and the length is 31CM, the width is 10CM.
More specifically, the sputum aspirator tubes storage tanks are fixedly installed on the outer side of the main body through the top of the third side and are used for storing the sputum aspirator tubes, and the number of the sputum aspirator tubes storage tanks is two in the embodiment.
More specifically, the first-aid inflatable pillow is fixedly arranged at the inner side of the main body through the bottom of the first side surface, and is used for storing the first-aid inflatable pillow.
Referring to fig. 2, in some embodiments, the work platform structure includes a bi-directional push-pull slide rail, a telescopic slide rail, and an extension work plate.
Specifically, the bidirectional push-pull slide rail is fixedly installed at two sides of the inside of the main body through the first side face and the third side face, namely, the top of the first side face and the top of the third side face of the main body are in a vacant state and provided with sliding grooves, and the bidirectional push-pull slide rail is fixedly installed in the bidirectional push-pull slide rail, so that the bidirectional push-pull slide rail can slide outwards from the inside of the main body or outwards to the inside of the main body through the second side face.
More specifically, the extension working plate is fixedly mounted on the telescopic slide rail, and the telescopic slide rail is fixedly mounted on the bidirectional push-pull slide rail, that is, the sliding of the bidirectional push-pull slide rail can drive the telescopic slide rail to move, and the telescopic slide rail can further move on the bidirectional push-pull slide rail to drive the extension working plate to move to the outer side.
More specifically, the length of the bidirectional push-pull slide rail is consistent with the long edge of the main body top surface, the appearance of the extension working plate is consistent with the appearance of the main body top surface, the extension working plate extends outwards only by means of the bidirectional push-pull slide rail, and the distance of one main body top surface can be extended by the extension working plate furthest.
In some embodiments, the recycling structure includes a medical waste bin and a household waste bin.
Specifically, the medical garbage can and the household garbage can are fixedly arranged in the main body through the bottom of the first side face, and are positioned on two sides of the emergency inflation storage place; more specifically, the medical trash can and the household trash can are embedded into the main body, and the medical trash can and the household trash can be extracted from the main body when in use so as to put garbage into the medical trash can and the household trash can.
In some embodiments, the top surface of the body is provided with a number of grooves.
Specifically, the shape of the groove is a cylinder and a cuboid, and the groove is used for storing disinfectant in the operation process so as to disinfect medical devices and provide guarantee for the safety of the operation.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims (9)

1. A tracheostomy rescue treatment device comprising:
the device comprises a main body, a moving structure, a storage structure, a workbench structure and a recovery structure;
the main body is in a cuboid shape, the top surface and the bottom surface of the main body are respectively provided with a pair of long edges and a pair of short edges, the main body is provided with a first side surface, a second side surface, a third side surface and a fourth side surface, the first side surface and the third side surface are adjacent to the long edges, and the second side surface and the fourth side surface are adjacent to the short edges;
the moving structure is fixedly arranged on the outer side of the main body through the bottom surface and the top of the first side surface and is used for a user to drive the main body;
the storage structure is fixedly arranged inside the main body through the first side surface and is fixedly arranged outside the main body through the third side surface and used for storing various medical devices;
the workbench structure is fixedly arranged in the main body through the tops of the first side surface, the second side surface and the third side surface and is used for providing a workbench for placing various medical devices during operation;
the recycling structure is fixedly arranged inside the main body through the bottom of the first side face and used for recycling garbage.
2. The tracheostomy rescue therapy device of claim 1, wherein said moving structure comprises a hand push bar and a plurality of pulleys;
the hand push rod is fixedly arranged on the outer side of the main body through the top of the first side surface;
the pulleys are fixedly arranged on the outer side of the main body respectively through four corner positions of the bottom surface.
3. The tracheostomy rescue therapy device of claim 1, wherein the storage structure includes a first drawer, a second drawer, a third drawer, a sputum suction tube storage tank, and a first aid inflatable pillow placement;
the first layer of drawers, the second layer of drawers and the third layer of drawers are fixedly arranged inside the main body from top to bottom in sequence through the first side face and are used for storing various medical devices;
the sputum suction pipe storage tank is fixedly arranged on the outer side of the main body through the top of the third side surface and used for storing the sputum suction pipe;
the first-aid inflatable pillow is placed at the position, where the first-aid inflatable pillow is placed, of the main body and is fixedly installed at the bottom of the first side face, and the first-aid inflatable pillow is stored in the main body.
4. The autogenous cutting rescue treatment device of claim 1, wherein the table structure includes a two-way push-pull slide rail, a telescopic slide rail and an extension work plate;
the bidirectional push-pull sliding rails are fixedly arranged on two sides of the interior of the main body through the tops of the first side surface and the third side surface, and have the function of sliding inside and outside through the second side surface;
the extension working plate is fixedly arranged on the telescopic sliding rail, the telescopic sliding rail is fixedly arranged on the bidirectional push-pull sliding rail, and the telescopic sliding rail has the function of sliding on the bidirectional push-pull sliding rail;
the middle part of the extension working plate is concave and used for placing medical devices.
5. The tracheostomy rescue therapy device of claim 1, wherein the recovery structure includes a medical waste bin and a household waste bin;
the medical garbage can and the household garbage can are fixedly installed in the main body through the bottom of the first side face respectively.
6. A tracheostomy rescue treatment device according to claim 3, wherein the first drawer has a plurality of zones;
the zones are used for storing sterile gloves, sterile yarn blocks, autogenous cutting yarn blocks, cotton balls, 20ml syringes, blades, disposable tracheal tubes, metal tracheal tubes, ophthalmic scissors, flashlights and laces from outside to inside respectively.
7. A tracheostomy rescue treatment device according to claim 3, wherein the second tier drawer has a plurality of zones;
the areas are used for storing infusion tubes, syringes, indwelling needles, 3M application, scalp needles, blood taking needles, cotton swabs, adhesive tapes, tourniquets, lidocaine, hematology and biochemistry, hematology and DIC from outside to inside respectively.
8. A tracheostomy rescue treatment device according to claim 3, wherein the third drawer has a plurality of zones;
the plurality of regions are respectively used for storing the tracheotomy bag, the cricothyroid membrane puncture bag, the head lamp and the sputum suction bag.
9. The tracheostomy rescue therapy device of claim 1, wherein the top surface of the body is provided with a plurality of grooves for storing a disinfecting solution during surgery.
CN202221858579.1U 2022-07-19 2022-07-19 Autogenous cutting rescue treatment equipment Active CN218247380U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202221858579.1U CN218247380U (en) 2022-07-19 2022-07-19 Autogenous cutting rescue treatment equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202221858579.1U CN218247380U (en) 2022-07-19 2022-07-19 Autogenous cutting rescue treatment equipment

Publications (1)

Publication Number Publication Date
CN218247380U true CN218247380U (en) 2023-01-10

Family

ID=84761395

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202221858579.1U Active CN218247380U (en) 2022-07-19 2022-07-19 Autogenous cutting rescue treatment equipment

Country Status (1)

Country Link
CN (1) CN218247380U (en)

Similar Documents

Publication Publication Date Title
JP6543349B2 (en) Capsule drainage set
CN218247380U (en) Autogenous cutting rescue treatment equipment
CN206852659U (en) A kind of integrated rescue carrigae
CN211067053U (en) Department of anesthesia uses postoperative apparatus strorage device
CN204217977U (en) A kind of nursing vest for first aid
CN201894704U (en) Emergency rescue box
CN204394698U (en) The indoor integrated care device of a kind of outpatient operation
CN201453528U (en) Portable emergency care kit
CN210301556U (en) Special medicine changing bag for tracheotomy
CN208233644U (en) A kind of medicine-chest for preventing drug expired
CN211834704U (en) Trolley for nursing in operating room
CN208582649U (en) A kind of Hospital trolley for nursing for suction sputum patient
CN211253460U (en) Medical science image branch of academic or vocational study is with protective articles containing box
CN206630683U (en) Portable bedside suction sputum box
CN2796685Y (en) Multifunction small size ambulance pallet cabinet
CN201840528U (en) Box for surgical supplies
CN216603404U (en) Support is used in operating room nursing
CN214511745U (en) Special nursing box of hemodialysis room
CN215135728U (en) Respiratory tract tumor acupuncture suction device
CN213787798U (en) Functional rack is used in operating room nursing
CN211834549U (en) Operation line fixing box for operating room nursing
CN215778681U (en) Operating room nursing tray
CN210962681U (en) Portable cerebral hernia first-aid kit
CN215132413U (en) Hemodialysis room dialysis catheter intubation multifunctional operation vehicle
CN216754863U (en) Multi-functional anesthesia car of department of anesthesia

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant